Legal Glossary

Over 1,000 legal terms defined in plain language. Browse by letter or search for any term.

A

Abandonment

property

The voluntary relinquishment of a right, claim, or property with no intention of reclaiming it.

Abandonment

family law

The voluntary departure of one spouse from the marital home without consent and without justification for a continuous statutory period, recognized as a fault ground for divorce in many states.

Abatement

general

A reduction, decrease, or elimination. In law, it may refer to the reduction of a tax, legacy, or nuisance.

Related:nuisance

Abatement

estate planning

The reduction of testamentary gifts when estate assets are insufficient to satisfy all bequests, applied in a statutory order beginning with residuary and ending with specific gifts.

Above-the-Line Deduction

tax

A deduction taken in computing AGI rather than from AGI, available to all taxpayers regardless of whether they itemize, including educator expenses and HSA contributions.

Absolute Priority Rule

bankruptcy

A principle requiring that senior creditor classes be paid in full before junior classes receive any distribution under a Chapter 11 plan.

Abstention Doctrine

civil procedure

Various judge-made doctrines under which federal courts decline to exercise jurisdiction in deference to state courts or state proceedings.

Abstract of Title

property

A condensed history of the title to a piece of land, listing all recorded instruments that affect ownership.

Related:titledeed

Abuse of Discretion

civil procedure

An appellate standard of review under which the lower court's ruling will be reversed only if based on an erroneous legal standard or clearly erroneous factual finding.

ACCA

criminal procedure

The Armed Career Criminal Act (18 U.S.C. 924(e)), imposing a 15-year mandatory minimum on felons in possession of a firearm with three prior violent or serious drug convictions.

Accelerated Vesting

business

The earlier-than-scheduled vesting of equity awards triggered by events such as a change of control, termination without cause, or death/disability.

Acceleration Clause

contracts

A provision in a loan agreement allowing the lender to demand immediate payment of the entire balance if certain conditions are met, such as missed payments.

Acceptance

contract law

An unequivocal assent to the terms of an offer, communicated to the offeror in the manner invited or required by the offer.

Access Control

healthcare

A HIPAA Security Rule technical safeguard requiring covered entities to implement procedures to ensure that only authorized persons can access electronic protected health information.

Accessory

criminal

A person who assists in the commission of a crime but is not the principal actor. An accessory before the fact helps plan the crime; an accessory after the fact aids the offender after the crime.

Accessory After the Fact

criminal procedure

One who, knowing a felony has been committed, helps the offender avoid arrest or punishment; treated as a separate, lesser offense.

Accomplice

criminal

A person who knowingly and voluntarily participates with another in a criminal act, either as a principal or accessory.

Accord and Satisfaction

contracts

An agreement to accept a different performance than what was originally promised, combined with the actual performance of that new agreement, discharging the original obligation.

Accord and Satisfaction

contract law

An agreement (accord) to accept a different performance in satisfaction of an existing claim, followed by performance (satisfaction) that discharges the underlying obligation.

Accounting of Disclosures

healthcare

A patient's right under HIPAA to receive a list of certain disclosures of their protected health information made by a covered entity during the preceding six years.

Accredited Investor

securities

An individual or entity meeting SEC income or net-worth thresholds and thus permitted to invest in unregistered securities offerings.

Acquired Citizenship

immigration

U.S. citizenship obtained at birth abroad through one or both U.S.-citizen parents who meet statutory residence or physical-presence requirements in effect at the time of the child's birth.

Acquittal

criminal

A finding of not guilty by a judge or jury, releasing the defendant from criminal charges.

Action

civil procedure

A lawsuit or legal proceeding brought before a court to enforce a right or seek a remedy.

Actual Innocence Claim

criminal procedure

A post-conviction assertion that newly discovered evidence demonstrates the petitioner is factually innocent, potentially excusing procedural defaults.

Actus Reus

criminal

The physical act or unlawful omission that constitutes a criminal offense. Together with mens rea, it forms the basis of criminal liability.

Ademption

estate planning

The failure of a specific bequest because the identified property is no longer in the estate at the testator's death, often due to sale or destruction.

Adequacy

civil procedure

The Rule 23(a)(4) requirement that the named representatives and class counsel fairly and adequately protect the interests of the absent class members.

Adequate Assurances

contract law

A party's right under UCC 2-609 to demand assurance of performance from another whose conduct provides reasonable grounds for insecurity, and to suspend its own performance pending response.

Adequate Protection

bankruptcy

Payments or other measures provided to a secured creditor to protect its interest in collateral during the bankruptcy case.

Adhesion Contract

contracts

A standardized form contract offered on a take-it-or-leave-it basis by a party with superior bargaining power, with no opportunity for negotiation.

Adjudication

civil procedure

The formal resolution of a dispute by a judge or administrative tribunal. The process of making a judicial decision.

Adjudicative Facts

evidence

Facts about the parties and their conduct that must be established at trial, the typical subject of judicial notice under FRE 201.

Adjusted Gross Income

tax

Total gross income minus specific above-the-line deductions, such as retirement contributions and student loan interest, used to determine eligibility for various tax benefits.

Adjusted Gross Income

tax

Gross income less specified above-the-line deductions (such as IRA contributions, student loan interest, and self-employment tax), serving as the base for many phaseouts and tax calculations.

Adjustment of Status

immigration

The process by which an eligible foreign national already in the United States obtains lawful permanent resident status without having to return to their home country.

Administrative Law

administrative

The body of law governing the activities of administrative agencies, including rulemaking, adjudication, and enforcement.

Administrator

estate planning

The court-appointed fiduciary who administers the estate of a person who died intestate or whose will did not name an executor able and willing to serve.

Admiralty Law

general

The body of law governing maritime activities, including shipping, navigation, waters, insurance, and piracy. Also called maritime law.

Admissible Evidence

evidence

Evidence that meets the rules of evidence and may be considered by a judge or jury in deciding a case.

Admission

criminal procedure

A statement by a party acknowledging a fact relevant to the case, which may be used against them. Unlike a confession, it need not acknowledge guilt of the entire offense.

Adoption

family

The legal process by which a person becomes the lawful parent of a child who is not biologically theirs, permanently transferring all parental rights.

Adoptive Admission

evidence

A non-hearsay statement under FRE 801(d)(2)(B) that a party manifestly adopted or believed to be true, including by silence in appropriate circumstances.

Adultery

family law

Voluntary sexual intercourse between a married person and someone other than that person's spouse, recognized as a fault ground for divorce and in some states relevant to alimony.

Advance Parole

immigration

A travel document allowing a foreign national with a pending immigration application to leave and reenter the United States without abandoning their application.

Advance Parole

immigration

A travel document authorizing certain noncitizens, such as adjustment-of-status applicants and DACA recipients, to leave and reenter the United States without abandoning the underlying application.

Advancement

estate planning

A lifetime gift from a parent to a child treated, under statute or written declaration, as a prepayment against that child's intestate share of the parent's estate.

Adversarial System

general

The legal system used in the United States where two opposing parties present their cases before a neutral judge or jury.

Adversary Proceeding

bankruptcy

A lawsuit filed within a bankruptcy case to resolve disputes such as fraudulent transfer claims, dischargeability of debts, or objections to exemptions.

Adverse Inference

evidence

A jury instruction permitting or requiring the inference that destroyed evidence would have been unfavorable to the spoliating party.

Adverse Possession

real estate

A method of acquiring title to real property by occupying it openly, continuously, exclusively, and adversely for the statutory period required by state law.

AEDPA

criminal procedure

The Antiterrorism and Effective Death Penalty Act of 1996, imposing a one-year statute of limitations and deferential review standard on federal habeas petitions.

Affidavit

civil procedure

A written statement of facts made under oath and signed before a notary public or other authorized officer.

Affiliate

business

A person or entity that controls, is controlled by, or is under common control with another person or entity, a broader concept than subsidiary used in many statutes and contracts.

Affirmative Defense

civil procedure

A defense strategy in which the defendant introduces evidence that, if found credible, negates criminal or civil liability even if the allegations are true.

Affordable Care Act

healthcare

The 2010 federal law that expanded health insurance coverage through Medicaid expansion, health insurance marketplaces, and individual and employer mandates.

Age Discrimination in Employment Act

employment

A federal law prohibiting employment discrimination against individuals 40 years of age or older in hiring, promotion, termination, and other terms of employment.

Agency

administrative

A governmental body with delegated authority to implement and enforce specific laws and regulations.

Aggravated Felony

immigration

A category of criminal offenses defined in the Immigration and Nationality Act that carries severe immigration consequences, including mandatory detention and removal.

Aiding and Abetting

criminal

Assisting or encouraging someone in committing a crime, which can result in criminal liability equal to that of the principal offender.

Alford Plea

criminal procedure

A guilty plea in which the defendant maintains innocence but acknowledges the prosecution has sufficient evidence to obtain a conviction, recognized in North Carolina v. Alford.

ALI Model Penal Code Test

criminal procedure

An insanity standard adopted by many jurisdictions asking whether, due to mental disease, the defendant lacked substantial capacity to appreciate criminality or conform conduct to the law.

Alimony

family

Financial support paid by one spouse to the other after separation or divorce, based on factors like length of marriage and earning capacity.

Alimony

family law

Payments from one former spouse to the other after divorce, traditionally to support the lower-earning spouse, with type and duration determined by statute, agreement, or judicial discretion.

Alimony Modification

family law

A post-decree change to an existing support order based on a substantial change in circumstances such as job loss, retirement, illness, or remarriage.

Allegation

civil procedure

A claim or assertion made by a party in a pleading that the party expects to prove at trial.

Allen Charge

criminal procedure

A supplemental instruction urging a deadlocked jury to reach a verdict by reconsidering minority views, named after Allen v. United States.

Allocution

criminal procedure

The defendant's formal statement to the court before sentencing, allowing them to express remorse, explain mitigating circumstances, or plead for leniency. It is a right rooted in common law.

Allotment

tribal

The historical federal policy of dividing communal tribal lands into individual parcels assigned to tribal members, resulting in significant loss of tribal land.

Alter Ego

business

A doctrine for piercing the corporate veil under which the entity is treated as indistinguishable from its owner because of commingling of funds, lack of formalities, or domination by the owner. Establishing alter ego typically also requires showing injustice or fraud.

Alternative Dispute Resolution

civil procedure

Methods of resolving disputes outside of traditional courtroom litigation, including mediation, arbitration, and negotiation.

Alternative Minimum Tax

tax

A parallel tax system that ensures higher-income taxpayers pay a minimum amount of tax by disallowing certain deductions and credits available under the regular tax system.

Alternative Minimum Tax

tax

Another name for the AMT, computed on AMTI (regular taxable income adjusted for AMT preferences and exclusions) less the AMT exemption, with the taxpayer paying the greater of regular or AMT tax.

Alternative Service

civil procedure

Court-authorized methods of service when traditional means are impracticable, including service by mail, publication, or electronic means.

Ambiguity

contract law

Uncertainty in the meaning of contract language, which may be resolved by extrinsic evidence such as course of dealing or usage of trade.

Amend

general

To change or modify a legal document, statute, or constitutional provision through a formal process.

Amended Return

tax

A form filed to correct errors on a previously filed tax return, such as changes to income, deductions, or credits.

Amendment

constitutional

A formal change or addition to a law, constitution, or legal document.

Americans with Disabilities Act Employment

employment

The federal law prohibiting employment discrimination against qualified individuals with disabilities and requiring employers to provide reasonable accommodations.

Amicus Curiae

civil procedure

Latin for 'friend of the court.' A person or organization that files a brief offering information or arguments relevant to a case in which they are not a party.

AMT

tax

The Alternative Minimum Tax, a parallel tax system designed to ensure that high-income taxpayers pay at least a minimum amount of tax by limiting certain deductions and preferences.

AMT Exemption

tax

A statutory amount subtracted from alternative minimum taxable income before applying AMT rates, with amounts varying by filing status and phasing out at higher income levels.

Ancillary Administration

estate planning

A secondary probate proceeding in a state other than the decedent's domicile, required to transfer title to real property or other assets located in that state.

Annual Exclusion

tax

The amount of gifts a person can give to any individual each year without incurring gift tax or using any of their lifetime gift tax exemption.

Annual Exclusion

tax

The amount each donor may give to each donee annually without gift tax or use of lifetime exemption ($18,000 in 2024), adjusted periodically for inflation.

Annulment

family

A legal declaration that a marriage is void and never legally existed, as opposed to divorce, which ends a valid marriage.

Answer

civil procedure

The defendant's formal written response to a complaint, admitting or denying the allegations and raising any defenses.

Answer

civil procedure

The defendant's responsive pleading that admits, denies, or pleads insufficient knowledge of each allegation in the complaint, and sets forth any affirmative defenses. It must generally be filed within 21 days after service under Rule 12(a).

Anti-assignment Clause

contract law

A contractual provision restricting or prohibiting assignment of rights, the enforceability of which varies by jurisdiction and context under UCC 2-210 and 9-406.

Anti-Dilution

business

Contractual provisions adjusting the conversion price of preferred stock downward upon issuance of new shares at a lower price, protecting investors from economic dilution.

Anti-Kickback Statute

healthcare

A federal criminal law prohibiting the knowing and willful offering, payment, solicitation, or receipt of anything of value to induce or reward referrals for services covered by federal healthcare programs.

Anti-Lapse

estate planning

A statutory rule preventing the failure of a bequest by redirecting it from a predeceased beneficiary to that beneficiary's descendants when the relationship requirement is met.

Anti-Lapse Statute

estate planning

A law preserving a bequest to a predeceased beneficiary by directing it to that beneficiary's descendants rather than allowing it to lapse into the residuary estate.

Anticipation 102

intellectual property

The patentability requirement under 35 U.S.C. Section 102 that the claimed invention must not be identically disclosed in a single piece of prior art.

Anticipatory Repudiation

contract law

A clear and unequivocal statement or act by a party before performance is due indicating it will not or cannot perform, giving the other party immediate remedies.

Anticipatory Warrant

criminal procedure

A warrant issued based on probable cause that evidence will be at a specified location upon the occurrence of a triggering condition, such as delivery of contraband.

Antitrust

business

Laws designed to promote competition and prevent monopolies, including the Sherman Act, Clayton Act, and FTC Act.

Apparent Authority

business

The power of an agent to act on behalf of a principal, as reasonably perceived by a third party, even if the agent lacks actual authority.

Appeal

civil procedure

A request to a higher court to review and change the decision of a lower court based on alleged legal errors.

Appellate Court

courts

A court that reviews decisions of lower courts for legal errors. It does not conduct new trials or hear new evidence.

Appraisal

real estate

A professional estimate of the market value of real property, typically required by lenders before approving a mortgage.

Appraisal Rights

business

Another term for dissenters' rights, referring to the statutory right of shareholders to seek judicial determination of the fair value of their shares in lieu of accepting merger consideration.

Apprendi Rule

criminal procedure

The constitutional rule from Apprendi v. New Jersey that any fact, other than a prior conviction, increasing the maximum penalty must be found by a jury beyond a reasonable doubt.

Appropriation

general

The legislative allocation of government funds for a specific purpose. Also, in tort law, the unauthorized use of another person's name or likeness for commercial benefit.

Arbitrary Mark

intellectual property

A common word used in an unrelated context (such as 'Apple' for computers), inherently distinctive and entitled to strong trademark protection.

Arbitration

civil procedure

A form of alternative dispute resolution where a neutral third party (arbitrator) hears evidence and makes a binding decision.

Arbitration

civil procedure

A binding alternative dispute resolution process in which a neutral arbitrator or panel renders a final decision, subject to limited judicial review.

Arbitration Agreement in Employment

employment

A contract provision requiring employees to resolve disputes with their employer through binding arbitration rather than litigation.

Arbitration Award

civil procedure

The arbitrator's final decision resolving the dispute, enforceable as a judgment after court confirmation under 9 USC 9 of the FAA.

Army Corps of Engineers

environmental

The federal agency responsible for issuing permits under Section 404 of the Clean Water Act for the discharge of dredged or fill material into waters of the United States.

Arraignment

criminal

A court proceeding in which the defendant is formally charged with a crime and asked to enter a plea of guilty, not guilty, or no contest.

Arrears

general

Money that is owed and should have been paid earlier, such as overdue rent, child support, or loan payments.

Related:defaultdebt

Arrest

criminal

The taking of a person into custody by law enforcement, typically based on probable cause that a crime has been committed.

Arrest

criminal procedure

The seizure of a person by legal authority, restricting their freedom of movement and subjecting them to custody pending charges.

Arrest Warrant

criminal procedure

A judicial order based on probable cause authorizing law enforcement to take a named person into custody for a specified offense.

Arson

criminal

The crime of intentionally or recklessly setting fire to property, including buildings, land, or vehicles.

Related:felonycrime

Article 15

military

A nonjudicial punishment under the UCMJ allowing a commanding officer to impose disciplinary action for minor offenses without a formal court-martial.

Articles of Incorporation

business

The charter document filed with the state to form a corporation, identifying the corporation's name, registered agent, authorized shares, and incorporator. Also called a certificate of incorporation in some states such as Delaware.

Articles of Organization

business

The charter document filed with the state to form an LLC, typically containing the LLC's name, registered agent, principal office, and sometimes management structure. Filing creates the LLC as a legal entity.

Assault

criminal

The intentional act of causing another person to fear imminent harmful or offensive contact. Distinguished from battery, which involves actual contact.

Related:batterytort

Assessment

real estate

The valuation of real property by a local government assessor for the purpose of calculating property taxes.

Asset

business

Anything of value owned by a person or entity, including real property, personal property, cash, investments, and intellectual property.

Asset Acquisition

business

A transaction in which a buyer purchases specified assets and assumes specified liabilities of a seller (rather than its stock), typically providing buyer protection from unwanted liabilities but with more complex transfer mechanics.

Assignee

contract law

The party to whom contractual rights are transferred, who acquires the right to enforce those rights subject to defenses good against the assignor.

Assignment

contract law

The transfer of contractual rights from the assignor to the assignee, who steps into the assignor's shoes for purposes of enforcement.

Assignor

contract law

The party who transfers contractual rights to another, surrendering the right to enforce those rights against the obligor.

Assumption

bankruptcy

The debtor's decision in bankruptcy to continue performing under an executory contract or unexpired lease, requiring cure of any defaults.

Asylum

immigration

Protection granted by a country to a foreign national who has fled their home country due to a well-founded fear of persecution.

Asylum

immigration

Protection granted to a noncitizen physically present in the United States who establishes a well-founded fear of persecution in the home country on account of race, religion, nationality, political opinion, or membership in a particular social group.

Asylum Interview

immigration

An interview conducted by a USCIS asylum officer to evaluate an affirmative asylum application and determine whether the applicant has a credible fear of persecution.

At-Will Doctrine

employment

The default employment rule in most states allowing either the employer or employee to terminate the employment relationship at any time for any lawful reason without prior notice.

At-Will Employment

employment

An employment arrangement where either the employer or employee can terminate the relationship at any time, for any lawful reason, with or without notice.

Attempt

criminal procedure

An effort to commit a crime that goes beyond mere preparation but falls short of completion, requiring specific intent and a substantial step.

Attenuation Doctrine

criminal procedure

An exception to the fruit of the poisonous tree rule allowing admission of evidence when the connection between unlawful police conduct and the evidence has become sufficiently weak.

Attestation

estate planning

The act by witnesses of observing the testator sign the will (or acknowledge the signature) and then signing their own names to confirm the formalities were satisfied.

Attestation Clause

estate planning

The recitation immediately above the witnesses' signatures stating that the statutory formalities of execution were observed, useful as evidence if the will is challenged.

Attorney

general

A person licensed to practice law and represent clients in legal matters, also called a lawyer or counsel.

Attorney for Child

family law

Counsel appointed to represent a child's expressed wishes in a legal proceeding, distinct from a guardian ad litem who advocates for best interests rather than expressed preferences.

Attorney-Client Privilege

evidence

A legal protection that prevents disclosure of confidential communications between an attorney and their client made for the purpose of obtaining legal advice.

Attorney-Client Privilege

evidence

A privilege protecting confidential communications between client and lawyer for the purpose of obtaining or providing legal advice.

Audit

tax

An examination of a taxpayer's return and financial records by the IRS to verify that income, deductions, and credits are reported accurately.

Audit Control

healthcare

A HIPAA Security Rule technical safeguard requiring implementation of hardware, software, and procedural mechanisms to record and examine access to electronic protected health information.

Augmented Estate

estate planning

Under the Uniform Probate Code, the enlarged estate used to compute the elective share, including probate assets plus certain non-probate transfers and spousal contributions to prevent evasion.

Authentication FRE 901

evidence

The requirement that the proponent of evidence produce sufficient proof to support a finding that the item is what it is claimed to be.

Automatic Stay

bankruptcy

An injunction that automatically takes effect upon the filing of a bankruptcy petition, halting most collection actions, foreclosures, and lawsuits against the debtor.

Automobile Exception

criminal procedure

An exception permitting warrantless search of a vehicle when officers have probable cause to believe it contains contraband or evidence, due to its mobility. Also known as the Carroll doctrine after Carroll v. United States (1925).

Avoidance Action

bankruptcy

A lawsuit brought by the bankruptcy trustee to recover payments or transfers made by the debtor before filing, including preferences and fraudulent transfers.

AWOL

military

Absent Without Leave, the military offense of being absent from one's unit or duty station without proper authorization, less serious than desertion.

B

Bad Faith

contracts

Dishonesty or fraud in a transaction; a willful failure to respond to plain demands or a refusal to fulfill contractual duties.

Bail

criminal

Money or property deposited with the court to secure the release of a defendant from custody, ensuring their appearance at future court proceedings.

Bailee

property

A person who receives personal property from another for a specific purpose, such as safekeeping or repair, under a bailment agreement.

Bailiff

courts

A court officer responsible for maintaining order in the courtroom and assisting the judge during proceedings.

Related:courtjudge

Bailment

property

The delivery of personal property by one person to another for a specific purpose, with the understanding that the property will be returned.

Bajakajian Excessive Fines

criminal procedure

The Eighth Amendment excessive-fines doctrine, applied in United States v. Bajakajian, holding that forfeitures grossly disproportional to the offense are unconstitutional.

Bankruptcy

bankruptcy

A federal legal proceeding that provides debt relief to individuals and businesses unable to pay their debts, governed by Title 11 of the U.S. Code.

Bankruptcy Abuse

bankruptcy

Misuse of the bankruptcy system, such as filing in bad faith or concealing assets, which may result in dismissal or denial of discharge.

Bankruptcy Estate

bankruptcy

All legal and equitable interests of the debtor in property at the time of filing, which becomes part of the estate subject to administration by the trustee.

Bankruptcy Exemption

bankruptcy

Property that a debtor is allowed to keep during bankruptcy, protected from liquidation under federal or state exemption statutes.

Bankruptcy Petition Preparer

bankruptcy

A non-attorney who prepares bankruptcy documents for a fee, subject to strict regulations and prohibited from offering legal advice.

Bankruptcy Schedules

bankruptcy

Forms filed by the debtor listing all assets, liabilities, income, expenses, and contracts, providing a comprehensive picture of the debtor's financial situation.

Bar Association

general

A professional organization for lawyers that may be voluntary or mandatory (integrated bar) for practicing in a jurisdiction.

Barker v Wingo Factors

criminal procedure

The four-factor balancing test for speedy-trial claims: length of delay, reason for delay, defendant's assertion of the right, and prejudice to the defendant.

Basis

business

A taxpayer's investment in property for tax purposes, used to compute gain, loss, depreciation, and other tax consequences. It generally equals cost, adjusted for various items over time.

Basis Carryover

tax

The treatment under which the recipient of gifted property takes the donor's basis (with adjustments) rather than a stepped-up basis, preserving built-in gain.

Basis Step-Up

tax

The adjustment of an asset's basis to fair market value as of the decedent's date of death under IRC Section 1014, eliminating built-in gain for income tax purposes.

Batson Challenge

criminal procedure

An objection to peremptory strikes based on race, ethnicity, or gender, requiring the striking party to provide a neutral explanation per Batson v. Kentucky.

Battery

criminal

The intentional and unlawful physical contact with another person without their consent. Distinguished from assault, which involves the threat of contact.

Related:assaulttort

Bench Trial

civil procedure

A trial conducted before a judge without a jury, where the judge serves as both the finder of fact and the arbiter of law.

Bench Warrant

criminal procedure

A warrant issued directly by a judge, typically for failure to appear in court or contempt, ordering law enforcement to bring the named person before the court.

Beneficial Owner

securities

A person who enjoys the benefits of ownership of a security even though legal title may be registered in another name, such as a street name.

Beneficiary

estate

A person or entity designated to receive benefits from a trust, will, insurance policy, or other legal arrangement.

Related:trustwill

Beneficiary Deed

estate planning

A revocable deed effective at the grantor's death that transfers real property directly to a named beneficiary outside of probate, recognized in roughly half the states.

Best Available Technology

environmental

The most effective pollution control technology that is economically achievable for an industrial category, used as a standard under the Clean Water Act.

Best Evidence Rule

evidence

The rule requiring the original of a writing, recording, or photograph to prove its content, subject to enumerated exceptions in FRE 1002 et seq. Also known as the original document rule.

Best Interests of the Child

family law

The overarching legal standard used by courts in custody, visitation, and child welfare proceedings, requiring decisions that promote the child's safety, stability, health, and emotional development. State statutes typically enumerate specific factors a judge must weigh.

Beyond a Reasonable Doubt

criminal

The highest standard of proof in the legal system, used in criminal cases. The prosecution must prove each element of the crime to a moral certainty.

BIA

immigration

The Board of Immigration Appeals, the highest administrative body interpreting immigration laws, which reviews decisions of immigration judges and certain DHS officers.

Bill of Rights

constitutional

The first ten amendments to the U.S. Constitution, ratified in 1791, guaranteeing fundamental individual liberties and limiting government power.

Biological Opinion

environmental

A document prepared by the U.S. Fish and Wildlife Service or NOAA Fisheries evaluating whether a proposed federal action is likely to jeopardize a listed species or destroy critical habitat.

Blockburger Test

criminal procedure

The same-elements test used to determine whether two offenses are the same for double-jeopardy purposes by examining whether each requires proof of an element the other does not.

Blue Sheet

securities

An SEC or FINRA request for trading data from broker-dealers used to investigate potential insider trading or market manipulation.

Blue Sky Laws

securities

State-level securities regulations designed to protect investors from fraudulent sales practices and securities fraud.

Blue-Pencil Doctrine

contract law

A judicial approach to overbroad noncompete clauses under which the court strikes (or in some states reforms) unreasonable terms to enforce the remainder.

Blurring

intellectual property

A form of trademark dilution in which the famous mark's distinctiveness is impaired by association with a similar mark used on different goods.

Board Observer

business

A non-voting participant in board meetings, typically designated by an investor without a board seat, who receives information and may participate in discussion but cannot vote.

Board of Immigration Appeals

immigration

The highest administrative body for interpreting and applying immigration law, hearing appeals from immigration judge decisions.

Bona Fide

general

Latin for 'in good faith.' Refers to actions or transactions made honestly, without fraud or deception.

Bona Fide Purchaser

property

A person who purchases property in good faith, for value, and without notice of any competing claims or defects in title.

Related:titledeed

Bond

general

A financial guarantee posted to ensure performance of an obligation. In criminal law, a bail bond secures a defendant's release from custody.

Related:bailsurety

Bonus Depreciation

tax

An additional first-year depreciation deduction under IRC Section 168(k) for qualified property, with percentages declining from 100% (TCJA) to 0% over several years.

Booker Advisory

criminal procedure

The status of the federal Sentencing Guidelines after United States v. Booker (2005), under which they are advisory rather than mandatory.

Border Search Exception

criminal procedure

A doctrine permitting routine warrantless searches at international borders without probable cause or reasonable suspicion, based on sovereign interests.

Boundary Dispute

real estate

A disagreement between adjoining property owners about the location of their common boundary line.

Brady Disclosure

criminal procedure

The prosecutor's constitutional duty to turn over exculpatory and impeachment evidence to the defense in a timely manner before trial.

Brady Material

criminal procedure

Evidence in the prosecution's possession that is favorable to the accused and material to guilt or punishment, which must be disclosed under Brady v. Maryland.

Breach Notification Rule

healthcare

A HIPAA requirement that covered entities and business associates notify affected individuals, HHS, and sometimes the media following a breach of unsecured protected health information.

Breach of Contract

contracts

The failure of a party to perform their obligations under a contract without a legal excuse.

Bridge-the-Gap Alimony

family law

Short-term support designed to assist a spouse in transitioning from married to single life by covering identifiable short-term needs, typically not exceeding two years.

Brief

civil procedure

A written legal argument submitted to a court, outlining the facts, legal issues, and arguments in support of a party's position.

Related:motionappeal

Broad-Based Weighted Average

business

A weighted-average anti-dilution formula counting all outstanding common stock, preferred stock, options, and reserved shares in the denominator, producing less protection than narrow-based.

Broker-Dealer

securities

A person or firm engaged in the business of buying and selling securities for its own account or on behalf of customers, regulated by FINRA and the SEC.

Related:finrasec

Brownfield

environmental

A property where expansion, redevelopment, or reuse may be complicated by the presence or potential presence of a hazardous substance, pollutant, or contaminant.

Buie Sweep

criminal procedure

The specific protective-sweep doctrine from Maryland v. Buie permitting officers to look in spaces immediately adjoining the arrest scene without additional justification.

Burden of Persuasion

evidence

The obligation to convince the factfinder of a fact to the required standard, such as preponderance or beyond a reasonable doubt.

Burden of Production

evidence

The obligation of a party to come forward with sufficient evidence on an issue to avoid an adverse ruling as a matter of law.

Burden of Proof

evidence

The obligation of a party to prove their allegations or claims to a specified standard (e.g., preponderance of evidence, beyond a reasonable doubt).

Bureau of Indian Affairs

tribal

The federal agency within the Department of the Interior responsible for administering programs and services for federally recognized Indian tribes.

Burford Abstention

civil procedure

The doctrine from Burford v. Sun Oil (1943) permitting abstention to avoid interference with complex state administrative schemes implicating important state policy.

Burglary

criminal

The unlawful entry into a building or structure with the intent to commit a crime inside, typically theft.

Related:theftfelony

Business Associate

healthcare

A person or entity that performs functions or services for a covered entity involving the use or disclosure of protected health information.

Business Associate Agreement

healthcare

A contract between a covered entity and a business associate that establishes the permitted uses and disclosures of protected health information by the business associate.

Business Judgment Rule

business

A common-law presumption that directors of a corporation acted on an informed basis, in good faith, and in the honest belief that the action was in the corporation's best interest, insulating their decisions from judicial second-guessing.

Business Records Exception

evidence

A hearsay exception under FRE 803(6) for records kept in the regular course of business activity, made at or near the time by someone with knowledge.

Bylaws

business

Rules adopted by a corporation or organization governing its internal affairs, including procedures for meetings, elections, and management.

Bylaws

business

The internal rules of a corporation governing matters such as shareholder meetings, board of directors composition, officer duties, and voting procedures. Bylaws are adopted by the board or shareholders and are not typically filed with the state.

C

C Corporation

tax

A business entity taxed separately from its owners under Subchapter C of the Internal Revenue Code, subject to corporate income tax and potential double taxation on dividends.

C-Corp

business

A corporation taxed under Subchapter C of the Internal Revenue Code, meaning the entity pays income tax at the corporate level and shareholders pay tax again on dividends received, resulting in double taxation.

Cancellation of Removal

immigration

A form of relief from removal available to certain lawful permanent residents or nonpermanent residents who meet specific residency and hardship requirements.

Cancellation of Removal

immigration

A discretionary form of relief that allows certain qualifying noncitizens to remain in the United States despite being removable, with separate eligibility rules for lawful permanent residents and non-permanent residents.

Cancellation Proceeding

intellectual property

A TTAB proceeding seeking to cancel an existing trademark registration on grounds such as abandonment, genericness, fraud, or likelihood of confusion with the petitioner's earlier mark.

Cap and Trade

environmental

A market-based approach to controlling pollution by setting a cap on total emissions and allowing companies to buy and sell emission allowances.

Capital Account

business

A bookkeeping account maintained for each partner or LLC member reflecting contributions, allocated profits and losses, and distributions, and used to determine economic entitlements.

Capital Call

business

A demand made by an entity (or its manager) on existing members or partners to contribute additional capital, typically pursuant to commitments in the operating or partnership agreement.

Capital Contribution

business

Cash, property, or services contributed by a partner, member, or shareholder to an entity in exchange for an equity interest.

Capital Crime

criminal

A crime punishable by death, such as first-degree murder with special circumstances.

Capital Gain

tax

The gain realized from the sale or exchange of a capital asset, taxed at preferential rates if the asset was held more than one year (long-term).

Capital Gains Tax

tax

A tax on the profit realized from the sale of a capital asset such as stocks, bonds, or real estate, with rates depending on the holding period.

Carbon Tax

environmental

A tax levied on the carbon content of fuels or carbon dioxide emissions, intended to reduce greenhouse gas emissions by making fossil fuels more expensive.

Caremark Claim

business

A derivative action alleging that directors breached their oversight duty by failing to implement reporting systems or by consciously disregarding red flags, considered one of the most difficult claims under Delaware law.

Carryback

tax

The application of an NOL or credit to a prior tax year to obtain a refund, with current law generally disallowing NOL carrybacks except for limited categories.

Carryforward

tax

The application of an unused NOL, credit, or other tax attribute to future tax years, with post-2017 NOLs carrying forward indefinitely but limited to 80% of taxable income.

Case Law

general

Law established through judicial decisions and court opinions, as opposed to statutes or regulations. Also called common law or judge-made law.

Cash Collateral

bankruptcy

Cash or cash equivalents in which a creditor holds a security interest, which the debtor may not use without the creditor's consent or court approval.

CAT Relief

immigration

Protection under the Convention Against Torture available to noncitizens who establish it is more likely than not they would be tortured if removed, granted as either withholding or deferral of removal.

Categorical Pretreatment Standard

environmental

EPA regulations limiting pollutant discharges from specific industrial categories into publicly owned treatment works.

Cause of Action

civil procedure

A set of facts and legal theories that give a party the right to seek a judicial remedy against another party.

Cease and Desist

general

An order or letter demanding that a party stop an activity (such as trademark infringement) and refrain from resuming it.

CERCLA

environmental

The Comprehensive Environmental Response, Compensation, and Liability Act (Superfund), authorizing cleanup of hazardous waste sites and imposing strict liability on responsible parties.

Certificate of Authority

business

A state-issued document permitting a foreign (out-of-state) corporation or LLC to transact business in the state, obtained through foreign qualification with the secretary of state.

Certification

civil procedure

The court's order under Rule 23(c) determining that an action may proceed as a class action after finding the prerequisites of numerosity, commonality, typicality, and adequacy are met.

Certiorari

civil procedure

A writ issued by a higher court directing a lower court to deliver the record of a case for review. The Supreme Court grants certiorari to hear appeals.

Certiorari

criminal procedure

A discretionary writ by which the U.S. Supreme Court or other high court reviews lower-court decisions, granted in only a small fraction of petitions.

Chain of Custody

evidence

The documented chronological history of the handling, transfer, and location of physical evidence, ensuring its integrity for use at trial.

Chain of Custody

evidence

A documented record of an item's handling from collection through trial, used to authenticate physical evidence and rebut tampering claims.

Challenge for Cause

civil procedure

A request to dismiss a prospective juror based on a demonstrated bias or inability to be impartial.

Change of Control

business

A defined event (such as a merger, sale of substantially all assets, or transfer of majority voting power) that triggers contractual rights such as acceleration, severance, or consents.

Chapter 11

bankruptcy

A form of bankruptcy that allows businesses to reorganize their debts and operations while continuing to operate.

Chapter 12

bankruptcy

A form of bankruptcy available to family farmers and fishermen with regular income, providing a streamlined reorganization process.

Chapter 13

bankruptcy

A form of bankruptcy allowing individuals with regular income to create a 3-to-5-year repayment plan to pay off debts while keeping their property.

Chapter 7

bankruptcy

A form of bankruptcy involving liquidation of non-exempt assets to pay creditors, with remaining eligible debts being discharged.

Chapter 7 Trustee

bankruptcy

A person appointed by the court to administer a Chapter 7 bankruptcy case, including liquidating nonexempt assets and distributing proceeds to creditors.

Chapter 9

bankruptcy

A form of bankruptcy available to municipalities such as cities, counties, and school districts, allowing them to reorganize their debts.

Character Evidence

evidence

Evidence of a person's general character traits, generally inadmissible to prove conduct on a particular occasion, with limited exceptions.

Character for Truthfulness

evidence

A witness's trait regarding honesty, attackable through reputation or opinion testimony and certain prior convictions under FRE 608 and 609.

Charging Order

business

A judicial remedy by which a judgment creditor of an LLC member or limited partner obtains rights only to distributions that would otherwise be paid to the debtor-member, without acquiring management or voting rights.

Charging Order Protection

business

A statutory feature in many states limiting a creditor's remedy against an LLC or partnership interest to a charging order, thereby protecting other members from forced sale or interference by the creditor.

Charitable Contribution

tax

A donation of cash or property to a qualifying tax-exempt organization, deductible as an itemized deduction subject to certain percentage limitations.

Charitable Deduction

tax

The itemized deduction for contributions to qualifying 501(c)(3) organizations, generally limited to 60% of AGI for cash to public charities and lesser percentages for property and private foundations.

Charitable Lead Trust

tax

A split-interest trust paying an annuity or unitrust amount to charity for a term, with the remainder passing to non-charitable beneficiaries, providing potential transfer tax savings.

Charitable Remainder Trust

tax

A split-interest trust paying an annuity or unitrust amount to non-charitable beneficiaries for a term, with the remainder passing to charity, providing income tax deduction and capital gains deferral.

Chattel

property

Personal property that is movable, as distinguished from real property (land and buildings).

Child Preference Age

family law

The age, varying by state, at which a court will give significant or controlling weight to a child's stated preference regarding custody or visitation, often around 12 to 14 years old.

Child Support

family law

Periodic payments by one parent to the other (or to the state) to contribute to the financial needs of a minor child, calculated under state guidelines.

Child Support Arrears

family law

Unpaid child support that has accumulated over time, treated as a judgment that bears interest in many states and is not dischargeable in bankruptcy.

Child Tax Credit

tax

A federal tax credit available to taxpayers for each qualifying dependent child, partially refundable for taxpayers who owe less tax than the credit amount.

Child Tax Credit

tax

A per-child credit available to taxpayers with qualifying children under age 17, partially refundable, with amounts and phaseouts adjusted by recent tax legislation.

Chimel Rule

criminal procedure

The principle from Chimel v. California limiting searches incident to arrest to the arrestee's person and the area within their immediate reach.

Choice of Law

civil procedure

The determination of which jurisdiction's law applies to a dispute when the parties or events are connected to more than one jurisdiction.

Churning

securities

Excessive trading in a customer's account by a broker-dealer primarily to generate commissions rather than to benefit the customer.

Circumstantial Evidence

evidence

Evidence that requires an inference to connect it to a conclusion of fact, as opposed to direct evidence.

Citation

general

A reference to a legal authority (statute, case, regulation) or a notice to appear in court for a minor offense.

Citizen Suit

environmental

A provision in many environmental statutes allowing private citizens to enforce environmental laws by filing lawsuits against violators or government agencies that fail to perform mandatory duties.

Citizen's Arrest

criminal procedure

An arrest performed by a private person rather than law enforcement, generally limited to felonies committed in the citizen's presence under most statutes.

Citizenship

immigration

The status of being a recognized member of a country, acquired by birth in the country, birth to citizen parents, or through the naturalization process.

Civics Test

immigration

An oral examination during the naturalization interview testing the applicant's knowledge of U.S. history and government, requiring correct answers to six of ten questions selected from a list of one hundred.

Civil Forfeiture

criminal procedure

An in rem proceeding against property allegedly used in or derived from criminal activity, requiring no conviction of the owner.

Civil Law

general

The body of law dealing with disputes between private parties, as opposed to criminal law. Encompasses contracts, torts, property, and family law.

Civil Monetary Penalty

healthcare

A financial penalty imposed by HHS for violations of HIPAA, with amounts varying based on the level of culpability from unknowing violations to willful neglect.

Civil Rights

constitutional

The rights of individuals to receive equal treatment and be free from discrimination based on characteristics such as race, sex, religion, and national origin.

Claim

civil procedure

An assertion of a right to money, property, or a legal remedy; also, the legal basis for a lawsuit.

Claim Construction

ip

The judicial interpretation of the scope and meaning of patent claims, a critical step in patent litigation often resolved in a Markman hearing.

Claim Construction

intellectual property

The judicial process of interpreting the meaning and scope of patent claims, a question of law for the court under Markman, often dispositive of infringement and validity.

Claims Bar Date

bankruptcy

The deadline set by the bankruptcy court by which creditors must file their proofs of claim or risk losing the right to participate in distributions.

Class Action

civil procedure

A lawsuit brought by one or more plaintiffs on behalf of a larger group of similarly situated individuals.

Class Action

civil procedure

A representative lawsuit under Rule 23 in which one or more named plaintiffs sue on behalf of a larger group of similarly situated persons. It allows efficient resolution of common claims that would be impractical to litigate individually.

Class Notice

civil procedure

The notice required by Rule 23(c)(2) to inform absent class members of certification, their rights to opt out, and any proposed settlement.

Clean Air Act

environmental

The primary federal law regulating air emissions from stationary and mobile sources, authorizing EPA to establish and enforce air quality standards.

Clean Water Act Permit

environmental

A permit issued under the Clean Water Act (typically an NPDES permit) authorizing the discharge of pollutants into navigable waters subject to specified limitations.

Clear and Convincing Evidence

evidence

A standard of proof higher than preponderance of the evidence but lower than beyond a reasonable doubt, requiring evidence that is highly and substantially more probable to be true.

Clearly Erroneous

civil procedure

The appellate standard for reviewing factual findings under Rule 52(a)(6), requiring a definite and firm conviction that a mistake was made.

Clerkship

general

A position in which a recent law school graduate works for a judge, assisting with legal research, drafting opinions, and other judicial duties.

Related:judgecourt

Cliff Vesting

business

A vesting feature under which no portion of an equity grant vests until a specified date (often one year), at which point a substantial portion vests at once.

Closing

real estate

The final step in a real estate transaction where the deed is delivered, documents are signed, and funds are disbursed to complete the transfer of ownership.

Related:escrowdeed

Closing Argument

civil procedure

The final statement made by each attorney to the judge or jury, summarizing the evidence and arguments presented during trial.

Cloud on Title

real estate

Any claim, lien, encumbrance, or defect that may impair the owner's title to real property and reduce its value or marketability.

CLT

tax

Acronym for charitable lead trust, which can be structured as grantor (income tax deduction) or non-grantor (estate planning) for different tax objectives.

Co-Conspirator Statement

evidence

A non-hearsay statement under FRE 801(d)(2)(E) made by a co-conspirator during and in furtherance of the conspiracy.

COBRA

healthcare

The Consolidated Omnibus Budget Reconciliation Act provision allowing employees and dependents to continue group health insurance coverage after qualifying events such as job loss.

Codicil

estate

A supplement or amendment to an existing will that modifies, explains, or revokes specific provisions without replacing the entire will.

Codicil

estate planning

A supplemental document executed with the same formalities as a will that amends, adds to, or partially revokes the provisions of an existing will.

Coercion

criminal

The use of force, threats, or intimidation to compel someone to act against their will.

Cohabitation Defense

family law

A basis for reducing or terminating alimony where the recipient is living with a romantic partner in a supportive, marriage-like relationship.

Collaborative Divorce

family law

A structured non-litigation process in which both spouses retain specially trained attorneys who agree in writing to withdraw if the matter cannot be settled, encouraging negotiated resolutions.

Collateral

business

Property pledged as security for a loan or debt. If the borrower defaults, the lender can seize the collateral.

Related:mortgagelien

Collateral Attack

criminal procedure

A challenge to a conviction or sentence in a separate proceeding rather than on direct appeal, typically through habeas corpus.

Collateral Estoppel

civil procedure

A doctrine preventing a party from relitigating an issue of fact that has already been determined in a prior proceeding. Also called issue preclusion.

Collateral Estoppel

civil procedure

A preclusion doctrine, also called issue preclusion, that bars relitigation of an issue actually litigated and necessarily decided in a prior action.

Collateral Order Doctrine

civil procedure

The judge-made exception to the final judgment rule, from Cohen v. Beneficial Industrial Loan (1949), allowing appeal from a small class of conclusively determined collateral orders.

Collective Bargaining

employment

The process of negotiation between an employer and a labor union representing employees regarding wages, hours, benefits, and working conditions.

Color of Law

constitutional

The appearance of legal authority. Actions taken under color of law are those performed by government officials using their official power.

Colorado River Abstention

civil procedure

The doctrine from Colorado River Water Conservation District v. United States (1976) allowing abstention in favor of parallel state proceedings only in exceptional circumstances.

Comity

general

The principle by which courts of one jurisdiction give respect and deference to the laws, judicial decisions, and institutions of another jurisdiction.

Comity

civil procedure

The principle of mutual respect and recognition that one jurisdiction extends to the laws, judgments, and proceedings of another, particularly in international contexts.

Commercial Real Estate

real estate

Real property used for business purposes such as offices, retail, industrial, and multifamily residential properties.

Commingle

business

To mix together, especially funds. Commingling personal and business funds can lead to piercing the corporate veil.

Commingling

family law

The mixing of separate property with marital property to such an extent that the separate character can no longer be traced, often resulting in the entire asset being treated as marital.

Common Authority

criminal procedure

Joint access to or control over property sufficient to authorize one occupant to consent to a search binding on the others.

Common Carrier

business

A company or individual that transports goods or passengers for compensation, owing a heightened duty of care.

Common Interest Doctrine

evidence

An extension of attorney-client privilege protecting communications among parties pursuing a shared legal interest, even if not formally joint clients.

Common Law

general

Law developed by judges through court decisions and precedent, rather than through legislative statutes or executive action.

Commonality

civil procedure

The Rule 23(a)(2) requirement that there be questions of law or fact common to the class, sharpened by Wal-Mart v. Dukes to require a common contention capable of classwide resolution.

Community Caretaking

criminal procedure

A doctrine recognizing certain noninvestigatory police functions, such as roadside assistance, that may justify limited intrusions without traditional Fourth Amendment justification.

Community Property

family

A system of property ownership used in some states where assets acquired during marriage are considered equally owned by both spouses.

Community Property

family law

The marital-property regime used in nine states under which most assets acquired during the marriage are owned equally by both spouses and divided equally on divorce.

Commutation

criminal

The reduction of a criminal sentence by executive action, such as the governor or president reducing a prison term.

Comparative Negligence

tort

A legal doctrine that apportions fault among parties in a negligence case, reducing the plaintiff's recovery by their percentage of fault.

Compassionate Release

criminal procedure

Early release from imprisonment based on extraordinary and compelling reasons, such as terminal illness, under 18 U.S.C. 3582(c)(1)(A).

Compensatory Damages

tort

Money awarded to a plaintiff to compensate for actual losses suffered, including medical expenses, lost wages, and property damage.

Competency to Stand Trial

criminal procedure

The legal capacity of a defendant to understand the proceedings and assist counsel, a prerequisite for prosecution under Dusky v. United States.

Complaint

civil procedure

The initial pleading filed by the plaintiff that begins a civil lawsuit, setting forth the allegations and claims against the defendant.

Complaint

civil procedure

The initial pleading filed by a plaintiff that commences a civil action by stating the basis for jurisdiction, the factual allegations, and the relief sought. Under Rule 8, it must contain a short and plain statement of the claim showing entitlement to relief.

Compliance

business

The act of conforming to laws, regulations, rules, and standards applicable to an individual or organization.

Compulsory Joinder

civil procedure

Required joinder under Rule 19 of a party whose absence would prevent complete relief or impair an existing party's interests, and whose joinder is feasible.

Compulsory License

ip

A license granted by a government authorizing use of a patent or copyrighted work without the owner's consent, typically in exchange for a royalty.

Compulsory Process

constitutional

The Sixth Amendment right of criminal defendants to subpoena witnesses to testify on their behalf.

Concerted Activity

employment

Action taken by two or more employees to improve working conditions, protected under the National Labor Relations Act even when no union is present.

Conciliation

civil procedure

A voluntary process in which a neutral third party helps disputing parties communicate and reach an agreement.

Concurrent Jurisdiction

courts

When two or more courts have the authority to hear the same type of case.

Concurrent Sentence

criminal

Criminal sentences served at the same time rather than one after another (consecutive).

Condemnation

property

The exercise of eminent domain — the government taking private property for public use with just compensation.

Condemnation

real estate

The legal process by which the government exercises eminent domain, taking private property for public use through court proceedings.

Condition Concurrent

contract law

Mutually dependent conditions that must be performed simultaneously, such as payment against delivery in a sale of goods.

Condition Precedent

contract law

An event that must occur before a party's duty of performance arises under the contract.

Condition Subsequent

contract law

An event whose occurrence terminates an already existing duty of performance, less common in modern doctrine.

Conditional Permanent Resident

immigration

A noncitizen granted permanent residence on a conditional basis for two years through marriage to a U.S. citizen or EB-5 investment, who must file to remove conditions before the status expires.

Conditional Plea

criminal procedure

A guilty plea that preserves the defendant's right to appeal specified pretrial rulings, with consent of the court and prosecutor.

Conditional Use Permit

real estate

Permission from a zoning authority to use property for a purpose not otherwise allowed in the zoning district, subject to conditions designed to minimize negative impacts.

Confession

criminal procedure

A direct acknowledgment by a defendant of guilt for the charged offense, typically requiring corroboration and a voluntariness inquiry before admission at trial.

Confirmation

bankruptcy

The court's approval of a Chapter 11 or Chapter 13 repayment plan, making the plan binding on the debtor and all creditors.

Confrontation Clause

criminal procedure

The Sixth Amendment guarantee that criminal defendants have the right to confront witnesses against them through cross-examination.

Consecutive Sentence

criminal

Criminal sentences served one after another rather than at the same time (concurrent).

Consequential Damages

contract law

Special damages arising from circumstances peculiar to the non-breaching party, recoverable only if reasonably foreseeable to the breaching party under Hadley v. Baxendale.

Conservator

estate

A person appointed by a court to manage the financial affairs or personal care of an incapacitated adult.

Consideration

contracts

Something of value exchanged between parties to a contract, which makes the agreement legally binding. Can be money, services, or a promise.

Consideration

contract law

The bargained-for exchange of legal value that supports a promise and distinguishes enforceable contracts from gratuitous promises.

Consolidated Tax Return

business

A single federal income tax return filed by an affiliated group of corporations (generally requiring 80% common ownership) that combines income and losses of group members.

Consolidation

civil procedure

The combining of two or more legal actions or businesses into a single proceeding or entity.

Conspiracy

criminal

An agreement between two or more persons to commit an unlawful act or to accomplish a lawful purpose by unlawful means.

Conspiracy

criminal procedure

An agreement between two or more persons to commit an unlawful act, generally requiring an overt act in furtherance of the agreement.

Constitution

constitutional

The supreme law of the United States, establishing the structure of government, defining governmental powers, and protecting individual rights.

Construction Law

real estate

The body of law governing construction projects, including contracts, liens, licensing, safety regulations, and dispute resolution.

Constructive Condition

contract law

A condition imposed by law rather than the parties, such as the requirement that each side substantially perform before the other's duty matures.

Constructive Discharge

employment

When an employer makes working conditions so intolerable that a reasonable employee would feel compelled to resign, treated legally as a termination.

Constructive Discharge

employment

A situation where an employer makes working conditions so intolerable that a reasonable employee would feel compelled to resign, treated as an involuntary termination.

Constructive Eviction

real estate

A situation where a landlord's actions or omissions make a property substantially unsuitable for its intended purpose, effectively forcing the tenant to vacate.

Constructive Notice

property

Legal notice that a person is deemed to have received even if they did not actually receive it, because the information was publicly available.

Consular Officer

immigration

A U.S. State Department official stationed at an embassy or consulate abroad who interviews visa applicants and makes determinations on visa eligibility.

Consular Processing

immigration

The procedure by which an approved immigrant visa petition is processed at a U.S. embassy or consulate abroad, culminating in the issuance of an immigrant visa.

Consular Processing

immigration

The process of obtaining an immigrant visa at a U.S. embassy or consulate abroad, used when the applicant is outside the United States or ineligible to adjust status.

Consumer Protection

general

Laws and regulations designed to protect buyers of goods and services from unfair, deceptive, or fraudulent business practices.

Related:ftcwarranty

Contempt for Non-Payment

family law

A judicial finding that an obligor has willfully failed to pay court-ordered support, which can result in fines, wage garnishment, or incarceration.

Contempt of Court

courts

Willful disobedience of a court order or disruptive behavior in court, punishable by fines or imprisonment.

Contested Divorce

family law

A dissolution in which the spouses dispute one or more issues such as custody, support, or property, requiring negotiation, mediation, or trial to resolve.

Contingency Fee

general

A fee arrangement where the attorney's payment depends on the outcome of the case, typically a percentage of the recovery.

Contingency Plan

healthcare

A HIPAA Security Rule administrative safeguard requiring covered entities to establish policies and procedures for responding to emergencies that damage systems containing electronic protected health information.

Contingent Remainder

estate planning

A future interest in property that depends upon the occurrence of some condition or the identification of an unascertained taker before it can become possessory.

Continuation Application

ip

A patent application filed to pursue additional claims based on the disclosure of a previously filed parent application, sharing the same filing date.

Continuation-in-Part

ip

A patent application that includes some or all of the disclosure of a prior application plus additional new matter, receiving the parent's priority date only for shared subject matter.

Contract

contracts

A legally enforceable agreement between two or more parties, consisting of an offer, acceptance, consideration, capacity, and legality.

Contributory Infringement

intellectual property

Secondary liability for copyright infringement imposed on one who, with knowledge of the infringing activity, induces, causes, or materially contributes to the infringing conduct of another.

Contributory Negligence

tort

A common law doctrine barring a plaintiff from recovering damages if they were at all at fault for their own injury.

Controlled Substance

healthcare

A drug or chemical whose manufacture, possession, or use is regulated by the government under the Controlled Substances Act, classified in Schedules I through V.

Convening Authority

military

The military officer who has the power to convene a court-martial and refer charges for trial, typically a commander at a specified level.

Convention Against Torture

immigration

An international treaty prohibiting the return of individuals to countries where they would face torture, implemented in U.S. immigration law as a form of protection.

Convention Against Torture

immigration

A treaty obligating the United States not to return any person to a country where they would more likely than not be tortured, implemented through CAT relief in immigration proceedings.

Conversion

tort

The wrongful exercise of control or dominion over another person's personal property, depriving them of its use.

Conversion Right

business

The right of preferred stockholders to convert their preferred shares into common stock, typically at a 1:1 ratio adjusted for anti-dilution.

Conveyance

property

The transfer of legal title to property from one person to another by means of a written instrument such as a deed.

Related:deedtitle

Coram Nobis

criminal procedure

An ancient writ used to correct fundamental errors in a criminal judgment, available in federal court only when no other remedy exists.

Coroner

criminal

A public official responsible for investigating deaths, particularly those that are sudden, unexplained, or suspicious.

Corporate Governance

securities

The system of rules, practices, and processes by which a company is directed and controlled, involving the interests of shareholders, management, and the board of directors.

Corporate Veil

business

The legal separation between a corporation (or LLC) and its owners that protects owners from personal liability for entity debts and obligations. The veil exists by default upon proper formation and observance of corporate formalities.

Corporation

business

A legal entity separate from its owners (shareholders) that can enter contracts, own property, sue and be sued, and has perpetual existence.

Corporation by Estoppel

business

An equitable doctrine preventing a party who has dealt with a business as if it were a corporation from later denying its corporate status to impose personal liability on the principals.

Corpus Delicti

criminal

Latin for 'body of the crime.' The principle that a crime must be proven to have occurred before a person can be convicted.

Corrective Action

environmental

A process under RCRA requiring facilities that have released hazardous waste or constituents to investigate and clean up contamination at their sites.

Corroboration

evidence

Additional evidence that confirms or supports testimony or other evidence already presented.

Counterclaim

civil procedure

A claim made by the defendant against the plaintiff in the same lawsuit, asserting that the plaintiff owes the defendant.

Counterclaim

civil procedure

A claim asserted by a defendant against the plaintiff in the same action, which may be compulsory (arising from the same transaction) or permissive under Rule 13.

Counteroffer

contract law

A response to an offer that proposes different terms, operating as both a rejection of the original offer and a new offer.

Course of Dealing

contract law

A sequence of conduct between parties under previous transactions establishing a common basis of understanding for interpreting current dealings under UCC 1-303.

Course of Performance

contract law

Conduct between the parties under the present contract that shows their mutual understanding of its terms, given particular weight under UCC 1-303.

Court of Appeals for the Armed Forces

military

The civilian appellate court that reviews decisions of the military appellate courts, composed of five civilian judges appointed by the President.

Court Order

courts

A directive issued by a judge that requires a party to do or refrain from doing a specific act.

Court-Martial

military

A judicial proceeding under the UCMJ in which members of the military are tried for offenses against military law.

Covenant

property

A formal promise or agreement, often found in contracts and deeds. In real estate, restrictive covenants limit how property can be used.

Related:deedeasement

Covenant

real estate

A binding agreement or promise in a deed or other instrument relating to the use or restriction of real property.

Covered Entity

healthcare

An organization subject to HIPAA regulations, including health plans, healthcare clearinghouses, and healthcare providers who transmit health information electronically.

Cram Down

bankruptcy

A bankruptcy court's power to confirm a reorganization plan over the objection of certain creditor classes, provided the plan meets statutory requirements.

Crawford Rule

criminal procedure

The principle from Crawford v. Washington that testimonial out-of-court statements by absent witnesses are inadmissible unless the witness is unavailable and the defendant had a prior opportunity to cross-examine.

Credentialing

healthcare

The process of verifying a healthcare provider's qualifications, including education, training, licensure, and malpractice history, before granting clinical privileges.

Credible Fear

immigration

A screening standard applied to asylum seekers in expedited removal, requiring a significant possibility that the individual could establish eligibility for asylum.

Credit Counseling

bankruptcy

A mandatory pre-filing requirement for individual bankruptcy debtors, involving a briefing on available alternatives to bankruptcy from an approved agency.

Creditor

bankruptcy

A person or entity to whom money is owed, either through a loan, sale of goods, or provision of services.

Related:debtorlien

Creditor Beneficiary

contract law

A traditional category of intended beneficiary to whom the promisee owes a debt that the promisor's performance will discharge.

Crime

criminal

An act or omission that violates a law and is punishable by the state through fines, imprisonment, or other penalties.

Crime-Fraud Exception

evidence

An exception to attorney-client privilege when the client sought or used legal services to further a crime or fraud.

Criminal Complaint

criminal procedure

An initial sworn charging document, often filed by a police officer or prosecutor, typically used to commence prosecution before indictment or information.

Criminal Forfeiture

criminal procedure

An in personam forfeiture ordered as part of a defendant's sentence after conviction, requiring proof of a nexus to the offense.

Criminal Information

criminal procedure

A formal charging document filed by a prosecutor rather than a grand jury, used in many states and in federal misdemeanors or after a waiver.

Criminal Law

criminal

The body of law that defines offenses against the state or public, establishes punishments, and governs the prosecution of those offenses.

Critical Habitat

environmental

Specific geographic areas designated as essential for the conservation of a threatened or endangered species under the Endangered Species Act.

Cross-claim

civil procedure

A claim asserted by one party against a co-party (same side of the v.) that arises out of the same transaction or occurrence as the original action under Rule 13(g).

Cross-Examination

evidence

The questioning of a witness by the opposing party's attorney, designed to test credibility and challenge testimony given during direct examination.

Crowdfunding

securities

A method of raising capital through small contributions from a large number of people, regulated under the JOBS Act and SEC Regulation Crowdfunding.

Crown Jewel Defense

business

A takeover defense in which the target sells or grants options on its most valuable assets to a friendly third party, making the target less attractive to the hostile bidder.

CRT

tax

Acronym for charitable remainder trust, including both CRATs (annuity trust) and CRUTs (unitrust) variants, governed by IRC Section 664 and used for tax-efficient charitable giving.

Cruel and Unusual Punishment

constitutional

Punishment prohibited by the Eighth Amendment, interpreted to include torture, disproportionate sentences, and degrading treatment.

Custodial Arrest

criminal procedure

A full arrest involving transport to a police station or detention facility, distinguished from a brief stop or citation in lieu of arrest.

Custodial Interrogation

criminal procedure

Questioning of a person by law enforcement after they have been taken into custody or otherwise significantly deprived of freedom, triggering Miranda obligations.

Custody

family

The legal right and responsibility to care for a child, including physical custody (where the child lives) and legal custody (decision-making authority).

Custody Evaluation

family law

A court-ordered psychological and social assessment of a family, performed by a neutral mental-health professional, that produces a written report and often a recommendation regarding custody and parenting time.

Custody Evaluator

family law

The licensed mental-health professional, typically a psychologist or social worker, who conducts interviews, psychological testing, and observations to produce a custody evaluation report.

Custody Factors

family law

The statutorily enumerated considerations a court must evaluate when allocating parental rights, often including each parent's caretaking history, the child's wishes, mental and physical health of all parties, and any history of domestic violence.

D

DACA

immigration

Deferred Action for Childhood Arrivals, a discretionary policy providing temporary protection from removal and work authorization to certain undocumented immigrants who came to the United States as children and meet specified criteria.

Damages

tort

Monetary compensation awarded by a court to a party who has suffered loss or injury due to another party's wrongful act.

Daubert Standard

evidence

The federal standard for admitting expert testimony, requiring the trial judge to assess relevance and reliability of the methodology under FRE 702.

Davis-Bacon Act

employment

A federal law requiring contractors on federally funded construction projects to pay workers no less than the locally prevailing wages and fringe benefits.

De Facto

general

Latin for 'in fact.' Describes something that exists in reality even if not officially recognized by law.

De Facto Corporation

business

An entity that has not strictly complied with incorporation statutes but has made a good-faith attempt to incorporate and has operated as a corporation, giving it limited recognition against most parties except the state.

De Jure

general

Latin for 'by law.' Describes something that exists by right or according to law.

De Jure Corporation

business

A corporation that has been properly formed under state law by full compliance with all statutory requirements, giving it legal recognition against all challengers, including the state.

De Novo

civil procedure

Latin for 'anew.' A de novo trial or hearing is conducted as if no previous decision had been made.

De Novo Review

civil procedure

An appellate standard giving no deference to the lower court's determination, used for questions of law and mixed questions where legal principles predominate.

De-Identification

healthcare

The process of removing or altering protected health information so that it no longer identifies an individual, making HIPAA protections inapplicable to the resulting data.

Death Penalty

criminal

The sentence of execution for a capital crime. Also called capital punishment. Subject to extensive constitutional limitations.

Debtor

bankruptcy

A person or entity that owes money or is obligated to pay a debt.

Debtor-in-Possession

bankruptcy

A debtor in a Chapter 11 case who continues to operate its business and manage its assets while under bankruptcy court supervision.

Debtor's Discharge

bankruptcy

The final order in a bankruptcy case that releases the debtor from personal liability for dischargeable debts.

Decedent

estate

A person who has died, especially one whose estate is being administered.

Declaratory Judgment

civil procedure

A court ruling that determines the rights and obligations of parties without ordering any specific action or awarding damages.

Deductible

general

The amount an insured person must pay out of pocket before insurance coverage begins. In tax law, an expense that can be subtracted from taxable income.

Related:insurancetax

Deed

property

A legal document that transfers ownership of real property from one party to another. Types include general warranty, special warranty, and quitclaim deeds.

Deed

real estate

A written instrument that transfers ownership of real property from a grantor to a grantee.

Deed of Trust

real estate

A document used in some states instead of a mortgage, conveying title to real property to a trustee as security for a loan until the borrower repays the debt.

Deed Restriction

real estate

A limitation placed in a deed that restricts the use of the property by subsequent owners, also known as a restrictive covenant.

Defamation

tort

A false statement of fact published to a third party that damages another person's reputation. Includes libel (written) and slander (spoken).

Related:libelslander

Default

civil procedure

The clerk's entry under Rule 55(a) noting a defendant's failure to plead or otherwise defend, a prerequisite to entry of default judgment.

Default Divorce

family law

A divorce entered when the responding spouse fails to file an answer within the statutory period after proper service, allowing the petitioner to obtain the relief requested.

Default Judgment

civil procedure

A judgment entered against a party who fails to appear in court or respond to legal proceedings.

Default Judgment

civil procedure

A judgment entered under Rule 55(b) against a party who has failed to appear or defend, after either clerk's entry (sum certain) or court hearing.

Defeasance

property

A clause or condition in a deed, lease, or other instrument that, upon performance, renders the instrument void.

Related:deedmortgage

Defend Trade Secrets Act

ip

A 2016 federal law creating a private civil cause of action for trade secret misappropriation, allowing parties to bring claims in federal court.

Defendant

general

The party against whom a lawsuit or criminal charge is brought.

Defense

general

The arguments, evidence, and legal strategy presented by the defendant to counter the plaintiff's or prosecution's case.

Defensive Non-Mutual Estoppel

civil procedure

Use by a non-party defendant of issue preclusion against a plaintiff who lost the same issue in a prior suit, permitted in federal court since Blonder-Tongue.

Deferred Action

immigration

A discretionary determination by immigration authorities to defer removal action against an individual for a specified period, often granting work authorization.

Delegation

contract law

The appointment of another to perform the delegator's duties under a contract, though the delegator typically remains liable unless a novation occurs.

Demand Futility

civil procedure

An exception excusing the demand requirement when a majority of directors are conflicted or the challenged transaction is not the product of a valid business judgment.

Demand Futility

business

An exception to the demand requirement allowing a shareholder to proceed with a derivative suit when demand on the board would be futile because the directors are interested or lack independence.

Demand Requirement

civil procedure

The Rule 23.1 prerequisite that a shareholder make a pre-suit demand on the board of directors to take corrective action before filing a derivative suit.

Demand Requirement

business

The procedural prerequisite that a shareholder asserting a derivative claim must first demand that the board pursue the claim, unless demand would be futile.

Demonstrative Bequest

estate planning

A gift in a will of a specified amount payable primarily from a designated source but, if that source is insufficient, from the general estate.

Demonstrative Evidence

evidence

Tangible items such as charts, models, or animations used to illustrate testimony rather than as substantive proof of facts.

Demurrer

civil procedure

A legal objection that, even if all the facts alleged in the complaint are true, they do not constitute a valid cause of action. Similar to a motion to dismiss.

Dependency Revival

estate planning

A related doctrine reviving a previously revoked will when a later will is itself revoked, on the inference that the testator would prefer the earlier will over intestacy.

Dependent Relative Revocation

estate planning

An equitable doctrine that disregards a revocation if the testator's act was based on a mistake of law or fact and the testator would not have revoked but for that mistake.

Deportability

immigration

Statutory grounds under INA section 237(a) that subject a noncitizen lawfully admitted to the United States to removal, including certain criminal convictions, immigration violations, and security risks.

Deportation

immigration

The formal removal of a foreign national from the United States for violating immigration laws.

Deportation

immigration

The formal removal of a foreign national from the United States for violations of immigration law, now generally referred to as removal.

Deportation

immigration

The forcible removal of a noncitizen from the United States after a final order of removal, executed by Immigration and Customs Enforcement.

Deposition

civil procedure

A pretrial discovery tool in which a witness provides sworn oral testimony, recorded by a court reporter, outside of court.

Deposition

civil procedure

Sworn out-of-court testimony of a witness, recorded for later use, taken under Rules 30 and 31 in oral or written form.

Depreciation

tax

A tax deduction allowing a business to recover the cost of certain tangible and intangible assets over their useful life through annual deductions.

Depreciation

tax

An annual deduction allowing the cost of tangible business or investment property to be recovered over its useful life through periodic deductions reflecting wear, tear, or obsolescence.

Depreciation Recapture

tax

Ordinary income treatment upon sale of depreciated property to the extent of prior depreciation deductions, under IRC Sections 1245 and 1250.

Derivative Beneficiary

immigration

A spouse or unmarried child under 21 who obtains an immigration benefit through a relationship with a principal applicant rather than by independent qualification.

Derivative Citizenship

immigration

U.S. citizenship acquired automatically by a child under 18 when a parent naturalizes, provided the child is a lawful permanent resident residing in the United States in the parent's custody.

Derivative Suit

civil procedure

A shareholder action brought on behalf of a corporation to enforce a right belonging to the corporation that its directors have failed to assert, governed by Rule 23.1.

Derivative Suit

business

A lawsuit brought by a shareholder on behalf of the corporation to enforce a corporate right, with any recovery going to the corporation rather than the plaintiff shareholder.

Derivative Use Immunity

criminal procedure

A protection barring use of evidence derived directly or indirectly from compelled testimony, required by Kastigar to satisfy the Fifth Amendment.

Derivative Work

intellectual property

A work based upon one or more preexisting works, such as a translation, adaptation, or sequel, in which the underlying work is recast, transformed, or adapted.

Derogation

general

The partial repeal or taking away of the effectiveness of a law, usually by a subsequent act.

Descriptive Mark

intellectual property

A mark that directly describes a characteristic or quality of the goods, protectable only upon a showing of secondary meaning (acquired distinctiveness).

Desertion

military

The offense under the UCMJ of abandoning military service without authorization and with the intent to remain away permanently or to avoid hazardous duty.

Related:ucmjawol

Design Patent

ip

A patent that protects the ornamental appearance of a functional item, lasting 15 years from the date of grant.

Design Patent

intellectual property

A patent protecting the ornamental design of a functional item for 15 years from issuance, focusing on appearance rather than function.

Designated Record Set

healthcare

A group of records maintained by or for a covered entity that is used to make decisions about individuals, including medical records, billing records, and enrollment information.

Detainer

property

The unlawful withholding of the property or person of another. An unlawful detainer action is an eviction proceeding.

Determinate Sentencing

criminal procedure

A system imposing a fixed term of imprisonment, with limited or no discretion for early release through parole.

Detrimental Reliance

contract law

A change of position by the promisee in reliance on a promise, sufficient under promissory estoppel to render the promise enforceable to avoid injustice.

Deviation from Guideline

family law

A court's decision to set child support at an amount different from the presumptive guideline calculation, requiring written findings explaining the reasons.

Devise

estate

A gift of real property made through a will. The person receiving the gift is a devisee.

Related:willbequest

Dictum

general

A judge's remark or observation in a court opinion that is not essential to the decision and does not establish binding precedent. Also called obiter dictum.

Dilation

civil procedure

An extension of time granted by a court for performing an act or filing a document.

Dilution

securities

The reduction in existing shareholders' ownership percentage caused by the issuance of additional shares.

Dilution

intellectual property

Harm to a famous mark's distinctiveness or reputation, even without consumer confusion, actionable under the Federal Trademark Dilution Act and state anti-dilution laws.

Diminished Capacity

criminal procedure

A doctrine allowing evidence of mental impairment to negate a specific intent element, reducing rather than eliminating criminal liability.

DIP Financing

bankruptcy

Post-petition financing obtained by a debtor-in-possession with court approval, typically granted superpriority status to incentivize lenders.

Direct Appeal

criminal procedure

An appeal taken from a final judgment of conviction to a higher court for review of alleged trial errors, ordinarily filed within strict time limits.

Direct Evidence

evidence

Evidence that directly proves a fact without requiring an inference, such as eyewitness testimony or a confession.

Direct Examination

evidence

The initial questioning of a witness by the party who called them to testify.

Directed Verdict

civil procedure

A ruling by the trial judge during a jury trial that takes the decision away from the jury because no reasonable jury could reach a different conclusion.

Directed Verdict

criminal procedure

A judgment entered by the court at trial in favor of one party, typically the defendant, when the evidence is legally insufficient to support a verdict for the other side.

Disbarment

general

The revocation of an attorney's license to practice law, typically for ethical violations or criminal conduct.

Discharge

bankruptcy

In bankruptcy, the release of a debtor from personal liability for certain debts, preventing creditors from collecting those debts.

Discharge

bankruptcy

A court order releasing a debtor from personal liability for certain debts, preventing creditors from taking collection action on those debts.

Discharge Characterization

military

The classification given to a military service member upon separation, including honorable, general under honorable conditions, other than honorable, bad conduct, and dishonorable.

Discharge Injunction

bankruptcy

The permanent injunction that arises upon the entry of a discharge order, prohibiting creditors from attempting to collect discharged debts.

Discovery

civil procedure

The pretrial process by which parties exchange information, documents, and evidence relevant to the case.

Discovery

civil procedure

The pretrial process under Rules 26-37 by which parties obtain evidence from each other and non-parties through tools such as depositions, interrogatories, and document requests.

Discovery Sanctions

civil procedure

Penalties under Rule 37 for failing to comply with discovery obligations, ranging from fee-shifting to evidentiary preclusion to dismissal or default.

Discrimination

employment

Treating a person differently or unfavorably based on a protected characteristic such as race, sex, age, disability, or religion.

Disgorgement

securities

An equitable remedy requiring a person who has profited from illegal or wrongful conduct to surrender those profits to the harmed parties or the government.

Disinheritance

estate

The act of excluding a person, often a family member, from inheriting under a will or trust.

Dismissal

civil procedure

The termination of a case by a court, either voluntarily by the plaintiff or involuntarily by the court. Can be with or without prejudice.

Disparate Impact

employment

A form of employment discrimination in which a facially neutral employment practice disproportionately affects members of a protected group without a legitimate business justification.

Disparate Treatment

employment

A form of employment discrimination in which an employer intentionally treats an individual less favorably because of a protected characteristic.

Dissenters' Rights

business

Statutory rights of shareholders who object to certain corporate transactions (such as mergers) to receive cash payment of the fair value of their shares instead of accepting the deal consideration.

Distinctiveness Spectrum

intellectual property

The Abercrombie classification of marks from least to most protectable: generic, descriptive, suggestive, arbitrary, and fanciful, determining trademark protection eligibility.

Distributive Share

business

A partner's or LLC member's allocated portion of partnership income, gain, loss, deduction, or credit, which the partner must report on the partner's return regardless of whether cash is distributed.

Diversity Jurisdiction

courts

Federal court jurisdiction over cases between citizens of different states where the amount in controversy exceeds $75,000.

Diversity Jurisdiction

civil procedure

Federal subject matter jurisdiction under 28 USC 1332 over civil actions between citizens of different states (or aliens) where the amount in controversy exceeds $75,000.

Diversity Visa Lottery

immigration

A program providing up to 55,000 immigrant visas annually through random selection to nationals of countries with low rates of immigration to the United States.

Dividend

securities

A distribution of a portion of a company's earnings to its shareholders, typically paid in cash or additional shares.

Divorce

family

The legal dissolution of a marriage by court order, addressing issues of property division, alimony, child custody, and child support.

DMCA

intellectual property

The Digital Millennium Copyright Act of 1998, which implements WIPO treaties and provides anti-circumvention rules and online service provider safe harbors for copyright liability.

DMCA Counter-Notice

intellectual property

A response by a user whose content was removed under a DMCA takedown, asserting good-faith belief that the removal was a mistake or misidentification and consenting to jurisdiction.

DMCA Takedown

ip

A notice and takedown procedure under the Digital Millennium Copyright Act requiring online service providers to remove infringing content upon receiving a valid complaint.

DMCA Takedown

intellectual property

A notice sent by a copyright owner to an online service provider under 17 U.S.C. Section 512 demanding removal of allegedly infringing user-posted material, which the provider must remove expeditiously to maintain safe harbor.

Docket

courts

A list of cases pending before a court, or the official record of proceedings in a case.

Doctor-Patient Privilege

evidence

A statutory or common-law privilege protecting confidential communications between a patient and physician made for purposes of diagnosis or treatment.

Doctrine of Equivalents

ip

A legal doctrine allowing a court to find patent infringement even when the accused product does not literally fall within the patent claims, if it performs substantially the same function.

Doctrine of Equivalents

intellectual property

A judicial doctrine permitting a finding of patent infringement even when the accused device does not literally meet every claim element, if it contains equivalents that perform substantially the same function in substantially the same way to achieve substantially the same result.

Dodd-Frank Act

securities

A 2010 federal law enacting sweeping financial regulatory reforms, including the creation of the Consumer Financial Protection Bureau and enhanced oversight of derivatives.

Domicile

general

A person's permanent legal residence, which may differ from where they currently live.

Donee Beneficiary

contract law

A traditional category of intended beneficiary whom the promisee intends to benefit by way of gift, such as a life insurance beneficiary.

Double Jeopardy

constitutional

The constitutional protection against being tried twice for the same offense after an acquittal or conviction. Guaranteed by the Fifth Amendment.

Double Jeopardy

criminal procedure

The Fifth Amendment protection against being tried or punished twice for the same offense by the same sovereign.

Double Taxation

business

The tax treatment of C corporations under which corporate profits are taxed once at the entity level and again at the shareholder level when distributed as dividends.

Drag-Along Right

business

A contractual right allowing majority shareholders to compel minority shareholders to join in a sale of the company on the same terms, ensuring the buyer can acquire 100%.

Drug Enforcement Administration

healthcare

The federal agency responsible for enforcing controlled substances laws and regulations, classifying drugs into schedules based on their potential for abuse.

Dual Intent

immigration

A doctrine allowing certain visa holders, notably H-1B and L-1 nonimmigrants, to pursue lawful permanent residence without violating the terms of their temporary status.

Dual Sovereignty Doctrine

criminal procedure

The principle that separate sovereigns, such as federal and state governments, may each prosecute a defendant for the same conduct without violating double jeopardy.

Due Diligence

business

The thorough investigation and analysis of a business, property, or legal matter before entering into a transaction or agreement.

Due Process

constitutional

The constitutional guarantee that the government must follow fair procedures before depriving any person of life, liberty, or property. Found in the Fifth and Fourteenth Amendments.

Durational Alimony

family law

Support awarded for a set period of time that may not exceed the length of the marriage, used in states such as Florida as an alternative to permanent alimony.

Duress

contracts

Coercion or threats that compel a person to act against their will. A contract entered into under duress may be voidable.

Duress

contract law

Improper coercion that overcomes a party's free will and induces assent to a contract, rendering it voidable.

Duress Defense

criminal procedure

An excuse defense available when the defendant committed the offense under threat of imminent serious bodily harm or death from another person.

Durham Rule

criminal procedure

An insanity test, now largely abandoned, that excused criminal conduct if it was the product of mental disease or defect.

Dusky Standard

criminal procedure

The competency standard from Dusky v. United States requiring sufficient present ability to consult with counsel and rational and factual understanding of the proceedings.

Duty of Care

tort

The legal obligation to act with a certain standard of care toward others to avoid causing harm. Central to negligence law.

Duty of Care

business

A director's or officer's duty to exercise the care that an ordinarily prudent person would in a like position, including being informed and acting deliberately.

Duty of Loyalty

business

A fiduciary's duty to act in good faith for the benefit of the entity, without conflicts of interest or self-dealing, including the obligation not to usurp corporate opportunities.

Dying Declaration

evidence

A hearsay exception under FRE 804(b)(2) for statements made by a declarant who believed death was imminent, concerning the cause or circumstances.

E

Earned Income Tax Credit

tax

A refundable federal tax credit for low-to-moderate income working individuals and families, designed to reduce poverty and incentivize work.

Easement

property

A legal right to use another person's land for a specific purpose without owning it.

Easement

real estate

A nonpossessory right to use another person's land for a specific purpose, such as access, drainage, or utilities.

Easement by Prescription

real estate

An easement acquired by open, continuous, hostile, and uninterrupted use of another's land for the statutory prescriptive period.

EB-1 Priority Worker

immigration

The first preference employment-based immigrant category for persons of extraordinary ability, outstanding professors and researchers, and certain multinational executives, with no labor certification required.

EB-2 Advanced Degree

immigration

The second preference employment-based immigrant category for professionals holding advanced degrees or persons of exceptional ability, typically requiring labor certification.

EB-3 Skilled Worker

immigration

The third preference employment-based immigrant category for skilled workers, professionals, and certain other workers, requiring labor certification and a permanent job offer.

EB-4 Special Immigrant

immigration

The fourth preference employment-based category covering religious workers, certain juvenile immigrants, broadcasters, and other defined groups.

EB-5 Investor

immigration

The fifth preference employment-based category for foreign nationals who invest at least the statutory minimum amount in a U.S. enterprise that creates at least ten full-time jobs.

Economic Duress

contract law

A modern form of duress in which one party exploits the other's financial vulnerability through wrongful threats, such as bad-faith threats to breach a critical contract.

Edwards Rule

criminal procedure

A bright-line rule that once a suspect invokes the right to counsel during custodial interrogation, police may not re-initiate questioning until counsel is present.

EEOC

employment

The Equal Employment Opportunity Commission, the federal agency responsible for enforcing federal laws prohibiting employment discrimination.

Related:title viiada

Effects Test

civil procedure

A jurisdictional theory under Calder v. Jones (1984) finding contacts where the defendant intentionally aimed conduct at the forum and caused harm felt there.

Eighth Amendment

constitutional

The constitutional amendment prohibiting excessive bail, excessive fines, and cruel and unusual punishment.

EITC

tax

The Earned Income Tax Credit, a refundable credit for low- and moderate-income working taxpayers, with amounts varying based on filing status and number of qualifying children.

Ejectment

property

A legal action to recover possession of real property from someone who is unlawfully occupying it.

Elective Share

estate planning

A statutory right of a surviving spouse to claim a defined percentage of the deceased spouse's estate notwithstanding the terms of the will, designed to prevent disinheritance.

Electronic Monitoring

criminal procedure

Use of devices, often ankle bracelets, to track an offender's location or compliance with conditions such as curfew or geographic restrictions.

Emancipation

family

The legal process by which a minor is freed from parental control and granted the legal rights and responsibilities of an adult.

Embezzlement

criminal

The fraudulent taking of personal property by someone to whom it was entrusted, such as an employee stealing company funds.

Related:fraudtheft

Emergency Aid Exception

criminal procedure

An exigent-circumstances doctrine allowing warrantless entry when officers reasonably believe a person inside needs immediate medical or protective aid.

Eminent Domain

property

The government's power to take private property for public use, provided it pays just compensation to the owner. Derived from the Fifth Amendment.

Eminent Domain

real estate

The government's power to take private property for public use, with the requirement of paying just compensation to the property owner.

Emission Standard

environmental

A legal limit on the amount of a pollutant that may be discharged from a specific source, established under statutes such as the Clean Air Act.

Emolument

constitutional

Payment or compensation for employment or services. The Emoluments Clause of the Constitution prohibits federal officials from receiving gifts from foreign governments.

Employee Retirement Income Security Act

employment

A federal law setting minimum standards for most voluntarily established retirement and health plans in private industry to provide protection for participants.

Employer Liability

employment

The legal responsibility of an employer for injuries, damages, or legal violations arising from the employment relationship, including respondeat superior and negligent hiring.

Employment Authorization Document

immigration

A card issued by USCIS granting a foreign national permission to work in the United States for a specific period.

Employment Contract

employment

An agreement between an employer and employee that specifies the terms of employment, including duties, compensation, and termination conditions.

Employment Contract

employment

A legally binding agreement between an employer and employee setting forth the terms and conditions of employment, including compensation, duties, and termination provisions.

EMTALA

healthcare

The Emergency Medical Treatment and Labor Act, requiring hospital emergency departments to provide medical screening and stabilizing treatment to anyone regardless of insurance status or ability to pay.

Enablement

ip

A patent law requirement that the specification must teach a person skilled in the art how to make and use the claimed invention without undue experimentation.

Enabling Statute

administrative

A law that grants authority to a government agency or official to take certain actions, such as creating regulations.

Encroachment

property

An intrusion upon the property or rights of another, such as a building or fence extending onto a neighbor's land.

Encryption

healthcare

The process of converting data into a coded form that can only be read by authorized parties, a key safeguard under the HIPAA Security Rule.

Encumbrance

property

A claim, lien, or liability attached to real property that may diminish its value or restrict its use, such as a mortgage, easement, or tax lien.

Related:lienmortgage

Encumbrance

real estate

Any claim, lien, charge, or liability attached to real property that may diminish its value or restrict its use.

Endangered Species Act

environmental

A federal law providing for the conservation of species at risk of extinction throughout all or a significant portion of their range and the ecosystems on which they depend.

Enforcement Rule

healthcare

The HIPAA regulation establishing procedures for investigations, hearings, and civil monetary penalties for violations of the HIPAA Privacy and Security Rules.

English Test

immigration

The portion of the naturalization examination assessing the applicant's ability to read, write, and speak basic English, with statutory exemptions for elderly long-term residents.

Enhanced Damages

ip

Treble damages that a court may award in a patent case where the infringement is found to be willful.

Enjoin

civil procedure

To issue a court order (injunction) requiring or prohibiting a specific action.

Entire Fairness Review

business

The most demanding standard of judicial review applied when directors stand on both sides of a transaction or have conflicts, requiring them to prove fair process and fair price.

Entrapment

criminal

A defense in criminal law claiming that law enforcement induced a person to commit a crime they would not otherwise have committed.

Entrapment

criminal procedure

An affirmative defense available when government agents induce a person to commit a crime they were not predisposed to commit.

Environmental Assessment

environmental

A concise document analyzing the environmental impacts of a proposed federal action to determine whether a full environmental impact statement is required.

Environmental Audit

environmental

A systematic review of a facility's compliance with environmental laws and regulations, often conducted voluntarily to identify and correct violations before enforcement action.

Environmental Compliance

environmental

The conformity of a business or facility with environmental laws, regulations, permits, and consent orders at the federal, state, and local levels.

Environmental Impact Statement

environmental

A detailed document required under NEPA for major federal actions significantly affecting the environment, analyzing the action's environmental consequences and alternatives.

Environmental Justice

environmental

The fair treatment and meaningful involvement of all people regardless of race, color, national origin, or income in the development and enforcement of environmental laws and regulations.

EOIR

immigration

The Executive Office for Immigration Review, a unit of the Department of Justice that operates the immigration court system and includes the Board of Immigration Appeals.

EPA Enforcement

environmental

Actions taken by the Environmental Protection Agency to compel compliance with environmental laws, including administrative orders, civil suits, and criminal prosecution.

EPCRA

environmental

The Emergency Planning and Community Right-to-Know Act, requiring businesses to report the storage, use, and release of hazardous substances to local communities.

Equal Opportunity

employment

The principle that all people should be treated fairly and given the same chances for employment, education, and other benefits regardless of protected characteristics.

Equal Pay Act

employment

A federal law prohibiting sex-based wage discrimination between men and women who perform substantially equal work in the same establishment.

Equal Protection

constitutional

The Fourteenth Amendment guarantee that all persons shall receive equal treatment under the law and that no state shall deny equal protection of the laws.

Equitable Distribution

family

A method of dividing marital property in a divorce based on fairness rather than an equal split, considering various factors.

Equitable Distribution

family law

The system used in most states for dividing marital property at divorce, requiring a fair allocation based on statutory factors rather than a strict 50/50 split.

Equitable Remedy

contract law

Non-monetary relief such as specific performance, injunction, rescission, or reformation, available when legal remedies are inadequate.

Equity

general

A branch of law providing remedies beyond monetary damages, such as injunctions and specific performance. Also refers to ownership value in an asset.

Equity of Redemption

property

The right of a mortgagor to reclaim property by paying the full mortgage debt before or after foreclosure, depending on state law.

Escheat

estate

The reversion of property to the state when a person dies without a will and without legal heirs.

Escheat

estate planning

The transfer of property to the state when a person dies without any heirs identifiable under the intestate succession statute, ensuring no estate remains ownerless.

Escheated Property

estate planning

Assets that have passed to the state under escheat laws because no qualifying heirs could be located, typically held for a period during which heirs may still claim them.

Escrow

property

An arrangement in which money, property, or documents are held by a neutral third party until specified conditions are met.

Related:closingdeed

Escrow

real estate

An arrangement in which a neutral third party holds documents and funds during a real estate transaction until all conditions of the sale are met.

ESI (Electronically Stored Information)

civil procedure

Information created, manipulated, communicated, stored, and best used in digital form, subject to specific discovery rules under Rule 34 and proportionality limits.

Essential Health Benefits

healthcare

A set of ten categories of services that health insurance plans must cover under the Affordable Care Act, including hospitalization, prescription drugs, and preventive care.

Estate

estate

All of the property and assets owned by a person, especially at the time of death. Also refers to an ownership interest in land.

Related:probatewill

Estate Planning

estate

The process of arranging for the management and distribution of a person's assets during their lifetime and after death.

Related:willtrust

Estate Tax

tax

A federal tax on the transfer of a deceased person's estate exceeding the lifetime exemption amount, calculated on the fair market value of assets at the time of death.

Estate Tax

tax

A federal transfer tax imposed on the taxable estate of a decedent under IRC Sections 2001-2210, computed at progressive rates against the unified credit.

Estimated Tax

tax

Quarterly tax payments made by self-employed individuals and others with income not subject to withholding to cover their anticipated tax liability.

Estoppel

general

A legal principle that prevents a person from asserting a position inconsistent with their previous conduct or representations if another party relied on those representations.

Estoppel by Deed

property

A doctrine preventing a grantor who conveys property by warranty deed from later claiming they did not have title at the time of conveyance.

Related:deedestoppel

Eviction

property

The legal process of removing a tenant from a rental property, typically for nonpayment of rent or lease violations.

Eviction

real estate

The legal process by which a landlord removes a tenant from rental property, typically for nonpayment of rent or violation of lease terms.

Evidence

evidence

Any form of proof presented in court to establish or disprove facts in a case, including testimony, documents, physical objects, and digital records.

Ex Parte

civil procedure

A legal proceeding or order involving only one party, without notice to or participation by the opposing party.

Exchange Act

securities

The Securities Exchange Act of 1934, which created the SEC and regulates the secondary trading of securities, broker-dealers, and exchanges.

Excise Tax

tax

A tax imposed on the manufacture, sale, or use of specific goods and services, such as fuel, tobacco, alcohol, and airline tickets.

Excited Utterance

evidence

A hearsay exception under FRE 803(2) for statements relating to a startling event made while under the stress of excitement it caused.

Exclusionary Rule

criminal

A legal principle that prohibits evidence obtained in violation of the defendant's constitutional rights from being used at trial.

Exclusionary Rule

criminal procedure

A judicially created remedy barring the use at trial of evidence obtained in violation of the Fourth, Fifth, or Sixth Amendments. Its purpose is to deter unconstitutional police conduct.

Exculpatory Clause

contracts

A contract provision that releases one party from liability for damages caused by their own negligence.

Exculpatory Evidence

criminal

Evidence tending to establish a criminal defendant's innocence. Prosecutors must disclose exculpatory evidence under the Brady rule.

Exculpatory Evidence

criminal procedure

Evidence tending to show the defendant's innocence, reduce culpability, or mitigate punishment, which the prosecution must disclose under Brady.

Excusable Neglect

civil procedure

A ground under Rule 60(b)(1) for relief from judgment based on mistake or oversight that, considering all relevant circumstances, is reasonable to excuse.

Executor

estate

A person named in a will to manage the deceased person's estate, including distributing assets and paying debts.

Related:probatewill

Executor

estate planning

The person named in a will to administer the testator's estate, gather assets, pay debts and taxes, and distribute the remainder to the beneficiaries.

Executory Contract

bankruptcy

A contract under which both parties have material unperformed obligations, which the debtor may assume or reject in bankruptcy.

Executory Interest

estate planning

A future interest in a third party that, upon happening of a stated event, divests an earlier interest, classified as either shifting or springing.

Exempt Property

estate planning

Specific tangible personal property, such as household furniture, automobiles, and appliances up to a statutory value, that a surviving spouse or children may claim from the estate ahead of creditors.

Exemption

bankruptcy

Property or income that is protected from seizure by creditors or from taxation. In bankruptcy, exemptions determine what property the debtor may keep.

Exhaustion

intellectual property

A doctrine in patent and trademark law (and parallel to first sale in copyright) under which the rights holder's right to control further distribution of a particular item is extinguished by an authorized first sale.

Exhaustion of Remedies

administrative

The requirement that a party pursue all available administrative remedies before seeking judicial review.

Exigent Circumstances

criminal procedure

Emergency situations justifying warrantless entry or search, such as imminent destruction of evidence, hot pursuit, or threats to life.

Expectation Damages

contract law

The default contract remedy intended to give the non-breaching party the benefit of its bargain, putting it in the position it would have occupied if the contract had been performed.

Expert Deposition

civil procedure

A deposition of a retained or specially employed expert witness, subject to special disclosure rules under Rule 26(a)(2) and limits on work-product discovery.

Expert Testimony

evidence

Opinion testimony by a qualified witness applying specialized knowledge to help the trier of fact understand evidence or determine a fact in issue under FRE 702.

Expert Witness

evidence

A person with specialized knowledge, training, or experience who is qualified to provide an opinion on technical or scientific matters in a legal proceeding.

Expert Witness

civil procedure

A witness qualified by knowledge, skill, experience, training, or education to offer opinion testimony under FRE 702, subject to Daubert reliability gatekeeping.

Express Condition

contract law

A condition explicitly stated in the contract, generally requiring strict compliance rather than substantial performance.

Expungement

criminal

The legal process of sealing or destroying a criminal record so that it is no longer accessible to the public.

Extortion

criminal

The crime of obtaining money, property, or services through coercion, threats, or intimidation.

Extradition

criminal

The formal process of surrendering a person accused or convicted of a crime from one jurisdiction (state or country) to another.

Extraordinary Ability Visa

immigration

An employment-based immigrant visa category (EB-1A) for individuals with extraordinary ability in sciences, arts, education, business, or athletics.

F

F-1 Student Visa

immigration

The non-immigrant classification for academic students enrolled full time at a SEVP-certified school, allowing study and limited on-campus employment.

F-1 Visa

immigration

A nonimmigrant visa for foreign students enrolled full-time in an accredited academic institution in the United States.

FAA (Federal Arbitration Act)

civil procedure

The 1925 federal statute, 9 USC 1 et seq., establishing a strong national policy favoring enforcement of arbitration agreements affecting commerce.

Facility Access Control

healthcare

A HIPAA Security Rule physical safeguard requiring covered entities to implement policies and procedures to limit physical access to electronic information systems and facilities.

Fact Finder

courts

The person or body (judge or jury) responsible for determining the facts in a legal proceeding.

Fact Witness

civil procedure

A witness who testifies based on personal knowledge of events relevant to the case, as distinguished from an expert offering specialized opinions.

Failure to State a Claim

civil procedure

The Rule 12(b)(6) ground for dismissal when the complaint, accepting all well-pleaded facts as true, does not state a plausible claim for relief.

Fair Labor Standards Act

employment

The primary federal law establishing minimum wage, overtime pay, recordkeeping, and child labor standards for employees in the private sector and government.

Fair Market Value

real estate

The price at which property would change hands between a willing buyer and a willing seller, neither under compulsion, and both having reasonable knowledge of relevant facts.

Fair Use

intellectual property

A legal doctrine allowing limited use of copyrighted material without permission for purposes such as criticism, commentary, news reporting, teaching, and research.

Fair Use

ip

A doctrine in copyright law permitting limited use of copyrighted material without permission for purposes such as criticism, commentary, news reporting, teaching, and research.

Fair Use

intellectual property

A statutory defense to copyright infringement under 17 U.S.C. Section 107 permitting limited unauthorized use of copyrighted works for purposes such as criticism, comment, news reporting, teaching, scholarship, and research.

Fair Value

business

The value of dissenting shares determined in an appraisal proceeding, typically excluding any value from the merger itself and using accepted financial methods like DCF.

Fair-Use Four Factors

intellectual property

The four statutory factors used to evaluate fair use: (1) purpose and character of the use, (2) nature of the copyrighted work, (3) amount and substantiality used, and (4) effect on the market for the original.

Fairness Hearing

civil procedure

The hearing under Rule 23(e) at which the court evaluates whether a proposed class settlement is fair, reasonable, and adequate before granting final approval.

Fallback Venue

civil procedure

Venue under 28 USC 1391(b)(3) available only when no other venue is proper, in any district where any defendant is subject to personal jurisdiction.

False Claims Act

healthcare

A federal statute imposing liability on persons and entities that defraud governmental programs, including healthcare fraud, with treble damages and per-claim penalties.

False Imprisonment

tort

The unlawful restraint of a person's freedom of movement without their consent and without legal authority.

Family Allowance

estate planning

A reasonable cash allowance payable during probate from the decedent's estate to support the surviving spouse and minor children while the estate is being administered.

Family and Medical Leave Act

employment

A federal law requiring covered employers to provide up to 12 weeks of unpaid, job-protected leave per year for specified family and medical reasons.

Famous Mark

intellectual property

A mark that is widely recognized by the general consuming public of the United States as a designation of source, a prerequisite for federal dilution protection.

Fanciful Mark

intellectual property

A coined or invented word with no prior meaning (such as 'Kodak' or 'Exxon'), receiving the strongest level of trademark protection.

Faretta Self-Representation

criminal procedure

The constitutional right, recognized in Faretta v. California, of a competent defendant to waive counsel and represent themselves in a criminal trial.

Fault Grounds

family law

Statutorily enumerated bases for divorce premised on marital misconduct, such as adultery, cruelty, or abandonment, which may affect support or property distribution in some jurisdictions.

Federal Court

courts

A court established under the U.S. Constitution to hear cases involving federal law, constitutional issues, and disputes between citizens of different states.

Federal Insecticide Fungicide and Rodenticide Act

environmental

A federal statute governing the sale, distribution, and use of pesticides, requiring EPA registration of all pesticide products.

Federal Question

courts

A case arising under the Constitution, federal statutes, or treaties, giving federal courts subject-matter jurisdiction.

Federal Question Jurisdiction

civil procedure

Federal jurisdiction under 28 USC 1331 over civil actions arising under the Constitution, laws, or treaties of the United States, as shown on the well-pleaded complaint.

Federally Recognized Tribe

tribal

An Indian tribe acknowledged by the federal government as having a government-to-government relationship with the United States, eligible for federal programs and services.

Fee Simple

real estate

The most complete form of ownership of real property, giving the owner the right to use, possess, and dispose of the land without limitation.

Fee Simple Defeasible

real estate

An estate in land that can be defeated or terminated upon the occurrence of a specified event or condition.

Fee-to-Trust

tribal

The process by which the federal government acquires private land and places it into trust status for the benefit of an Indian tribe, removing it from state and local jurisdiction.

Felony

criminal

A serious crime typically punishable by imprisonment for more than one year or death. Examples include murder, robbery, and burglary.

Felony Murder Rule

criminal

A legal rule holding a participant in a felony criminally liable for any death that occurs during the commission of the felony.

Related:murderfelony

Fiduciary

business

A person or entity that holds a position of trust and has a legal obligation to act in the best interest of another party.

Fiduciary Duty

business

A legal obligation of one party to act in the best interest of another, requiring utmost good faith, trust, and loyalty.

Fiduciary Duty

business

The legal obligation of directors, officers, partners, and other fiduciaries to act in the best interest of the entity and its beneficiaries, primarily comprising duties of care and loyalty.

Fiduciary Duty (Executor)

estate planning

The high standard of loyalty, care, and impartiality owed by an executor to the estate and its beneficiaries, including duties to avoid self-dealing and to account for all transactions.

Fiduciary Duty in Securities

securities

The obligation of investment advisers and broker-dealers to act in the best interest of their clients when providing investment advice or managing assets.

Fifth Amendment

constitutional

The constitutional amendment providing protections against double jeopardy, self-incrimination, and deprivation of life, liberty, or property without due process.

Filing

civil procedure

The formal submission of legal documents to a court to initiate or continue a legal proceeding.

Filing Status

tax

A classification that determines the tax rate, standard deduction, and eligibility for certain credits, including single, married filing jointly, married filing separately, head of household, and qualifying widow(er).

Final Judgment

civil procedure

A court's last action that fully resolves all issues in a case, making it eligible for appeal.

Final Judgment Rule

civil procedure

The principle codified in 28 USC 1291 that appellate jurisdiction extends only to final decisions of district courts, with limited statutory and judge-made exceptions.

Finding of No Significant Impact

environmental

A document issued by a federal agency when an environmental assessment determines that a proposed action will not significantly affect the environment, eliminating the need for a full EIS.

FINRA

securities

The Financial Industry Regulatory Authority, a self-regulatory organization that oversees broker-dealers and enforces compliance with securities rules.

First Amendment

constitutional

The constitutional amendment protecting freedom of speech, religion, press, assembly, and the right to petition the government.

First Sale Doctrine

intellectual property

The principle codified at 17 U.S.C. Section 109 that the owner of a lawfully made copy may sell, lend, or otherwise dispose of that particular copy without the copyright holder's permission.

First Step Act

criminal procedure

A 2018 federal criminal-justice reform law expanding compassionate release, reducing certain mandatory minimums, and authorizing earned-time credits.

Fixture

property

Personal property that has been attached to real property in such a way that it becomes part of the real property.

FLSA Exemption

employment

A classification under the Fair Labor Standards Act that exempts certain employees from minimum wage and overtime requirements based on their job duties and salary level.

FMLA Retaliation

employment

An employer's adverse action against an employee for exercising their rights under the Family and Medical Leave Act.

Follow-to-Join Benefits

immigration

Derivative immigration benefits available to the spouse and unmarried children under 21 of an asylee or refugee, permitting their later admission to the United States.

For-Cause Challenge

criminal procedure

A motion to remove a prospective juror based on a specific reason indicating inability to be impartial, with no numerical limit.

Force Majeure

contracts

A clause in a contract that frees parties from liability when extraordinary events beyond their control prevent performance, such as natural disasters or wars.

Foreclosure

property

The legal process by which a lender seizes and sells property when the borrower fails to make mortgage payments.

Foreclosure

real estate

A legal process by which a lender seizes and sells real property to recover the balance of a defaulted loan secured by a mortgage or deed of trust.

Foreign Qualification

business

The process by which a corporation or LLC formed in one state registers to do business in another state, requiring appointment of a registered agent and payment of fees. Failure to qualify can prevent the entity from suing in that state.

Foreign Tax Credit

tax

A credit allowing U.S. taxpayers to reduce their federal tax liability by the amount of income taxes paid or accrued to a foreign country.

Foreseeability Rule

contract law

The Hadley v. Baxendale principle limiting consequential damages to losses the breaching party had reason to foresee at the time the contract was made.

Forfeiture

criminal procedure

Government seizure of property connected to criminal activity, available through civil or criminal proceedings.

Forgery

criminal

The crime of making, altering, or possessing a false document with the intent to defraud.

Form 10-K

securities

An annual report filed with the SEC providing a comprehensive summary of a public company's financial performance, including audited financial statements.

Related:form 10 qsec

Form 10-Q

securities

A quarterly report filed with the SEC containing unaudited financial statements and a continuing view of a company's financial position.

Related:form 10 ksec

Form 1099

tax

A series of IRS information returns used to report various types of income other than wages, salaries, and tips, including independent contractor payments and investment income.

Forum

courts

The court or jurisdiction where a case is heard.

Forum Non Conveniens

civil procedure

The discretionary doctrine permitting a court with jurisdiction to dismiss an action when another forum would be substantially more convenient and just.

Forum Shopping

civil procedure

The practice of choosing a court or jurisdiction that is most likely to provide a favorable outcome.

Foundational Requirements

evidence

Threshold showings of authenticity, personal knowledge, and relevance that must be established before evidence can be admitted at trial.

Founder Shares

business

Common shares issued to a startup's founders at incorporation, typically at nominal value and subject to vesting and repurchase rights.

Fourteenth Amendment

constitutional

The constitutional amendment guaranteeing citizenship to all persons born in the U.S., due process of law, and equal protection of the laws.

Franchise

business

A license granted by a company (franchisor) to an individual or group (franchisee) to operate a business using the company's brand, products, and systems.

Fraud

criminal

Intentional deception or misrepresentation made with the intent to deprive another person of property or a legal right.

Fraud on the Court

civil procedure

An egregious species of fraud that defiles the judicial machinery itself, supporting independent action to set aside a judgment without the usual time limits.

Fraudulent Misrepresentation

contract law

An intentional or reckless false assertion made with intent to induce reliance, supporting both rescission and tort damages.

Fraudulent Transfer

bankruptcy

A conveyance of property made with the intent to hinder, delay, or defraud creditors, or made without receiving reasonably equivalent value while the debtor was insolvent.

FRE 403 Balancing

evidence

The trial court's weighing of probative value against the danger of unfair prejudice, confusion, or undue delay to determine admissibility.

FRE 404(b) Other Acts

evidence

A rule excluding evidence of prior bad acts to prove character but allowing it for non-propensity purposes like motive, opportunity, or identity.

FRE 406 Habit

evidence

The federal rule permitting evidence of a person's habit or an organization's routine practice to prove conduct in conformity therewith.

FRE 413

evidence

A federal rule permitting evidence of a defendant's other sexual assaults in cases involving sexual-assault charges for any relevant purpose.

FRE 414

evidence

A federal rule permitting evidence of a defendant's prior acts of child molestation in cases charging child molestation for any relevant purpose.

Freedom of Speech

constitutional

The First Amendment right protecting individuals from government censorship of their expression, subject to certain limited exceptions.

Fresh Start

bankruptcy

The fundamental policy underlying consumer bankruptcy, allowing honest debtors to eliminate overwhelming debts and begin anew.

Friendly Parent Rule

family law

A custody doctrine favoring the parent more likely to foster a continuing relationship between the child and the other parent, sometimes codified as a factor in custody statutes.

Frivolous

civil procedure

Lacking any legal merit or factual basis. Courts may impose sanctions for filing frivolous claims.

Fruit of the Poisonous Tree

criminal procedure

Doctrine holding that evidence derived from an illegal search or seizure is itself inadmissible, extending the exclusionary rule to indirect products of misconduct.

Frye Standard

evidence

An older test, still used in some states, admitting expert testimony only if the underlying methodology is generally accepted in the relevant scientific community.

Full Faith and Credit

constitutional

The constitutional requirement that each state honor the legislative acts, public records, and judicial decisions of every other state.

Full Faith and Credit

civil procedure

The Article IV, Section 1 command, implemented by 28 USC 1738, that each state give full effect to the judicial proceedings of every other state.

Full Litigation Requirement

civil procedure

The principle that issue preclusion applies only when the precluded issue was actually litigated and necessarily determined in the prior proceeding.

Full Ratchet

business

The most aggressive form of anti-dilution adjustment, lowering the conversion price of existing preferred to the price of any new issuance regardless of size.

FUTA

employment

The Federal Unemployment Tax Act, imposing a payroll tax on employers to fund state unemployment insurance programs and the federal share of extended benefits.

G

GAL

family law

A common abbreviation for guardian ad litem, the court-appointed representative tasked with investigating and advocating for the best interests of a minor or incapacitated person.

Gant Rule

criminal procedure

A rule from Arizona v. Gant limiting vehicle searches incident to arrest to situations where the arrestee can reach the passenger compartment or evidence of the offense may be found.

Garnishment

bankruptcy

A court-ordered process that directs a third party (typically an employer or bank) to withhold money from a debtor's wages or accounts to pay a creditor.

Gatekeeper Function

evidence

The trial judge's duty under Daubert to screen expert testimony for reliability and fit before allowing it to reach the jury.

General Bequest

estate planning

A gift in a will payable from the general assets of the estate rather than a particular source, such as a sum of money not tied to a specific account.

General Court-Martial

military

The most serious level of military court, with jurisdiction over all UCMJ offenses and the authority to impose any punishment authorized by the code, including death.

General Intent

criminal procedure

A mental state requiring only that the defendant intended to perform the prohibited act, without proof of any further specific purpose.

General Jurisdiction

courts

The authority of a court to hear any type of case, unless specifically excluded by law.

General Jurisdiction

civil procedure

All-purpose personal jurisdiction permitting suit for any claim against a defendant whose contacts with the forum are so continuous and systematic as to render it 'at home,' per Daimler v. Bauman.

Generic Mark

intellectual property

A term that refers to the genus or class of goods itself (such as 'aspirin' for pain reliever) and is never entitled to trademark protection.

Genericide

intellectual property

The loss of trademark rights when a mark becomes the generic name for a category of goods (such as 'escalator' or 'aspirin'), making it unprotectable.

Genetic Information Nondiscrimination Act

employment

A federal law prohibiting discrimination in employment and health insurance based on an individual's genetic information.

Geneva Conventions

military

Four international treaties and their additional protocols establishing the standards of international law for humanitarian treatment during armed conflict.

Genuine Dispute

civil procedure

A factual disagreement that a reasonable jury could resolve in favor of the non-moving party, defeating summary judgment under Anderson v. Liberty Lobby.

Gerstein Hearing

criminal procedure

A prompt judicial determination of probable cause required for any extended pretrial detention following a warrantless arrest, per Gerstein v. Pugh.

Gideon v Wainwright

criminal procedure

A 1963 Supreme Court decision holding that the Sixth Amendment requires states to provide counsel to indigent defendants in felony cases.

Gift Tax

tax

A federal tax on transfers of property from one individual to another for less than full consideration, with an annual exclusion amount and a lifetime exemption.

Gift Tax

tax

A federal transfer tax imposed on lifetime gifts under IRC Sections 2501-2524, integrated with the estate tax through a unified credit and rate structure.

Giglio Material

criminal procedure

Impeachment evidence concerning government witnesses, such as plea deals or credibility issues, that must be disclosed under Giglio v. United States.

Going-Concern Value

business

The value of a business as a continuing operating enterprise, reflecting future cash flows, rather than the liquidation value of its assets.

Golden Parachute

business

Contractual provisions providing substantial compensation to executives upon a change of control, including severance, accelerated equity, and bonuses, subject to Section 280G tax limits.

Good Faith

contracts

An honest and sincere intention to deal fairly and without taking unfair advantage. A legal concept applied in contracts, negotiations, and insurance.

Good Moral Character Requirement

immigration

A statutory eligibility prerequisite for naturalization and several forms of relief from removal, requiring that the applicant have behaved in conformance with community standards during a statutory period.

Good Samaritan Law

tort

A law protecting people who voluntarily provide emergency assistance to an injured person from liability for unintentional harm.

Good-Faith Exception

criminal procedure

A doctrine permitting admission of evidence seized under a warrant later found defective, where officers reasonably relied on the warrant's validity.

GPS Monitoring

criminal procedure

A form of electronic monitoring using satellite tracking to record an offender's precise location continuously, often used for high-risk supervisees.

Grand Jury

criminal

A panel of citizens that examines evidence presented by a prosecutor and decides whether there is sufficient probable cause to indict a person for a crime.

Grand Jury

criminal procedure

A body of citizens convened to investigate criminal conduct and decide whether sufficient evidence exists to indict, conducting proceedings in secret.

Grand Jury Subpoena

criminal procedure

A compulsory process issued by a grand jury requiring a witness to appear and testify or produce documents in connection with its investigation.

Grand Jury Target Letter

criminal procedure

A formal notice from prosecutors to a person identified as a target of grand jury investigation, advising of the investigation and offering opportunity to testify.

Grand Larceny

criminal

Theft of property above a certain monetary threshold, classified as a felony. The threshold varies by state.

Grandparent Visitation

family law

A statutory right in many states by which grandparents may petition the court for visitation with a grandchild, subject to constitutional deference to fit parents' decisions.

Grantee

property

A person who receives property or rights through a deed or other legal instrument.

Related:grantordeed

Grantor

estate

A person who transfers property or rights to another party. In trusts, the grantor creates the trust and transfers assets into it.

Related:granteetrust

Grantor Trust

tax

A trust in which the grantor retains sufficient control or beneficial interest under IRC Sections 671-679 that trust income is taxed to the grantor rather than the trust or beneficiaries.

GRAT

tax

A grantor retained annuity trust under IRC Section 2702 in which the grantor transfers assets and retains an annuity for a term of years, with remaining trust assets passing to beneficiaries free of gift tax if structured properly.

Green Card

immigration

Informal term for a Permanent Resident Card (Form I-551), which evidences lawful permanent resident status in the United States.

Green Card

immigration

The common name for a lawful permanent resident card, entitling the holder to live and work permanently in the United States.

Greenhouse Gas

environmental

Gases such as carbon dioxide, methane, and nitrous oxide that trap heat in the atmosphere and contribute to climate change, increasingly subject to environmental regulation.

Gross Income

tax

All income from whatever source derived, including wages, interest, dividends, business income, and capital gains, before any deductions or exemptions.

Gross Negligence

tort

A conscious and voluntary disregard of the need to use reasonable care, involving a greater degree of carelessness than ordinary negligence.

Ground Lease

real estate

A long-term lease of land on which the tenant is permitted to construct improvements, with ownership of the land remaining with the lessor.

Grounds

civil procedure

The legal basis or foundation for a lawsuit, motion, or argument.

GST Tax

tax

The federal generation-skipping transfer tax imposed at the highest estate tax rate on transfers to skip persons (persons two or more generations below the transferor), in addition to gift or estate tax.

Guardian

family

A person appointed by a court to make decisions on behalf of someone who is unable to do so themselves, such as a minor or incapacitated adult.

Related:wardcustody

Guardian Ad Litem

family

A person appointed by a court to represent the best interests of a child or incapacitated adult during legal proceedings.

Guardian Ad Litem

family law

A person, often an attorney or trained volunteer, appointed by the court to represent the best interests of a child or incapacitated party in litigation.

Guilty

criminal

A verdict finding that the defendant committed the crime charged. Also, the plea a defendant may enter acknowledging guilt.

H

H-1B Cap

immigration

The statutory annual numerical limit on new H-1B visas, currently 65,000 plus 20,000 for U.S. master's degree holders, which is typically reached on the first day of filing.

H-1B Lottery

immigration

The random selection process used by USCIS each year when registrations exceed the H-1B cap, determining which registrants may file full petitions.

H-1B Specialty Occupation

immigration

A non-immigrant work visa for foreign professionals in specialty occupations requiring at least a bachelor's degree in a specific field, capped annually and subject to lottery selection.

H-1B Visa

immigration

A nonimmigrant work visa for foreign workers in specialty occupations requiring a bachelor's degree or equivalent in a specific field.

H-2A Agricultural

immigration

A temporary visa classification for foreign nationals coming to perform seasonal or temporary agricultural labor, requiring an employer-sponsored petition and Department of Labor certification.

H-2B Seasonal

immigration

A temporary visa for non-agricultural seasonal or temporary workers, subject to an annual cap and requirements that the employer show a temporary need and no displacement of U.S. workers.

Habeas Corpus

constitutional

A writ requiring a person to be brought before a court, used to challenge the legality of their imprisonment or detention. A fundamental safeguard against unlawful confinement.

Habeas Corpus

criminal procedure

A judicial writ used to challenge unlawful detention or imprisonment, often invoked to test the constitutionality of a conviction.

Habit

evidence

A regular, semi-automatic response to specific conduct, admissible to prove conformity on a particular occasion under FRE 406.

Habitual Offender

criminal

A person who has been convicted of multiple crimes, often subject to enhanced sentencing under three-strikes laws.

Habitual Offender

criminal procedure

A statutory designation for repeat offenders triggering enhanced sentences, often defined by the number and nature of prior felony convictions.

Hadley v Baxendale

contract law

The 1854 English case establishing that consequential damages are recoverable only if they arose naturally or were reasonably contemplated by both parties at contracting.

Hague Convention on Child Abduction

family law

The 1980 Hague Convention on the Civil Aspects of International Child Abduction, providing for the prompt return of children wrongfully removed or retained across international borders to their country of habitual residence.

Halfway House

criminal procedure

A residential facility providing structured living for offenders transitioning from incarceration to the community, often used as part of supervised release.

Harmless Error

civil procedure

An error during trial that did not affect the outcome and therefore does not warrant reversal of the judgment on appeal.

Harmless Error

civil procedure

An error in the trial proceedings that did not affect the substantial rights of the parties and therefore does not require reversal under Rule 61.

Hatch-Waxman Act

ip

A federal law governing the approval of generic drugs and patent dispute procedures, balancing incentives for pharmaceutical innovation with generic drug availability.

Hazardous Waste

environmental

Waste posing a substantial present or potential hazard to human health or the environment, regulated under the Resource Conservation and Recovery Act.

Related:rcracercla

Health Information Exchange

healthcare

The electronic sharing of health-related information among organizations according to nationally recognized standards, facilitating coordinated patient care.

Hearsay

evidence

An out-of-court statement offered in court to prove the truth of the matter asserted. Generally inadmissible, with numerous exceptions.

Hearsay FRE 801

evidence

An out-of-court statement offered to prove the truth of the matter asserted, generally inadmissible unless covered by an exception.

Hereditament

estate

Any property that can be inherited, including real property, personal property, and intangible rights.

HIPAA Authorization

healthcare

A detailed written document signed by a patient giving a covered entity permission to use or disclose protected health information for purposes not otherwise permitted under HIPAA.

HIPAA Privacy Rule

healthcare

The federal regulation establishing standards for the protection of individually identifiable health information by covered entities and business associates.

HIPAA Security Rule

healthcare

The federal regulation requiring covered entities and business associates to implement safeguards to ensure the confidentiality, integrity, and availability of electronic protected health information.

HITECH Act

healthcare

The Health Information Technology for Economic and Clinical Health Act, which strengthened HIPAA enforcement, expanded breach notification requirements, and promoted electronic health record adoption.

Hobby Loss Rule

tax

An IRS rule disallowing deductions from an activity not engaged in for profit, limiting deductions to the amount of income generated by the activity.

Holding

general

The court's determination of a legal question; the rule or principle established by a court decision. Distinguished from dictum.

Holding Company

business

A parent entity that owns controlling interests in one or more operating subsidiaries but does not itself engage in operating business activities.

Holographic Will

estate

A will that is entirely handwritten and signed by the testator, without witnesses. Recognized in some states.

Holographic Will

estate planning

A will written entirely or substantially in the testator's own handwriting and signed by the testator, which most states honoring this form recognize without witnesses.

Homestead Allowance

estate planning

A statutory amount, often a few thousand to tens of thousands of dollars, set aside for a surviving spouse or minor children from the decedent's estate, free of most creditor claims.

Homestead Exemption

bankruptcy

A legal provision that protects a portion of a homeowner's equity in their primary residence from creditors, particularly in bankruptcy.

Homestead Exemption

real estate

A legal provision protecting a specified amount of equity in a homeowner's primary residence from creditors or reducing property tax obligations.

Homicide

criminal

The killing of one person by another, which may be criminal (murder, manslaughter) or justifiable (self-defense).

Hostile Takeover

business

An acquisition pursued without the approval or against the wishes of the target company's board, often through a tender offer or proxy contest.

Hostile Work Environment

employment

A form of harassment where unwelcome conduct based on a protected characteristic is severe or pervasive enough to create an abusive or intimidating work environment.

Hostile Work Environment

employment

A form of harassment in which unwelcome conduct based on a protected characteristic is so severe or pervasive that it alters the conditions of employment and creates an abusive working atmosphere.

Hot Pursuit

criminal procedure

An exigent-circumstances exception permitting warrantless entry to capture a fleeing suspect who has retreated into private premises.

Humanitarian Parole

immigration

Discretionary authority allowing the government to permit entry of a foreign national into the United States temporarily for urgent humanitarian reasons.

Related:paroleuscis

Hung Jury

criminal

A jury that is unable to reach a unanimous verdict, resulting in a mistrial. The case may be retried.

Hurdle Rate

business

A minimum rate of return that must be achieved before a sponsor or manager is entitled to performance compensation such as carried interest.

I

I-130 Petition

immigration

A form filed by a U.S. citizen or lawful permanent resident to establish a qualifying family relationship with a foreign national seeking an immigrant visa.

I-140 Petition

immigration

An employer-filed petition to classify a foreign worker as eligible for an employment-based immigrant visa.

I-601 Waiver

immigration

The application to waive specific grounds of inadmissibility such as fraud, certain crimes, or unlawful presence, filed concurrently with an immigrant visa or adjustment application.

I-601A Provisional Waiver

immigration

A waiver of the three- or ten-year unlawful-presence bar that may be applied for and approved within the United States before departure for consular processing, reducing family separation.

I-751 Removal of Conditions

immigration

The USCIS petition filed by a conditional permanent resident based on marriage to remove the conditions and obtain a 10-year green card, typically filed jointly with the spouse during the 90-day window before expiration.

ICPC

family law

The Interstate Compact on the Placement of Children, a uniform agreement among all states ensuring that children placed across state lines for foster care or adoption receive protections and proper supervision.

IDGT

tax

Acronym for intentionally defective grantor trust, a popular estate planning vehicle that allows the grantor to effectively make additional tax-free gifts by paying the trust's income tax.

Illegality

contract law

The doctrine rendering contracts unenforceable when their formation or performance violates a statute, regulation, or public policy.

Illusory Promise

contracts

A statement that appears to be a promise but actually commits the promisor to nothing, making any resulting contract unenforceable.

Illustrative Evidence

evidence

Another term for demonstrative evidence, offered to help the jury understand testimony but not formally admitted as substantive proof.

Immigrant Intent

immigration

The intention to reside permanently in the United States, which most non-immigrant visa applicants must rebut through evidence of ties to a home country.

Immigrant Visa

immigration

A visa issued to a foreign national intending to live permanently in the United States, based on an approved petition by a family member or employer.

Immigration Bond

immigration

A bond posted to secure the release of a detained foreign national from immigration custody, with the amount set by an immigration judge or ICE.

Immigration Judge

immigration

A judge within the Executive Office for Immigration Review who presides over removal proceedings and decides whether a foreign national may remain in the United States.

Immigration Judge

immigration

An attorney appointed by the Attorney General who presides over removal proceedings in immigration court and issues decisions on removability and relief.

Immigration Waiver

immigration

A form of relief that forgives certain grounds of inadmissibility, such as unlawful presence or fraud, allowing an otherwise ineligible foreign national to obtain a visa or green card.

Immunity

general

Protection from legal liability or prosecution granted by law. Types include sovereign immunity (government), diplomatic immunity, and witness immunity.

Impanel

civil procedure

To select and seat a jury for a trial.

Impeachment

constitutional

The process of formally accusing a public official of misconduct. In evidence law, the process of attacking a witness's credibility.

Impeachment Evidence

criminal procedure

Evidence offered to attack the credibility of a witness, including prior inconsistent statements, bias, or convictions for crimes of dishonesty.

Impleader

civil procedure

The procedural device under Rule 14 by which a defendant brings a third party into the suit on a theory of derivative or secondary liability, such as indemnity or contribution.

Implied Condition

contract law

A condition not expressly stated but inferred from the nature of the contract or the conduct of the parties.

Imputed Income

family law

Earnings attributed to a parent by the court when that parent is voluntarily unemployed or underemployed, based on earning capacity rather than actual income, for purposes of calculating support.

In Camera

civil procedure

Latin for 'in chambers.' A legal proceeding or review conducted privately by a judge, typically to review sensitive evidence.

In Camera Interview

family law

A private interview of a child by the judge, typically in chambers and outside the presence of the parents, used to assess the child's preferences and well-being in custody proceedings.

In Forma Pauperis

civil procedure

Latin for 'in the manner of a pauper.' A status allowing a person who cannot afford court fees to proceed without paying them.

In Loco Parentis

family

Latin for 'in the place of a parent.' Refers to a person or institution acting in a parental capacity.

In Rem

civil procedure

A legal action directed against property rather than against a specific person.

In Terrorem Clause

estate planning

Latin for an 'in terror' provision, another name for a no-contest clause that threatens forfeiture of a bequest if the beneficiary contests the will.

Inadmissibility

immigration

Grounds under the Immigration and Nationality Act that make a foreign national ineligible for admission to the United States, including criminal convictions, health issues, and prior immigration violations.

Inadmissibility

immigration

Statutory grounds under INA section 212(a) that bar a noncitizen from being admitted to the United States or adjusting status, including health, criminal, security, public-charge, and prior-removal categories.

Inalienable Rights

constitutional

Rights that cannot be surrendered, sold, or transferred to another person, such as life, liberty, and the pursuit of happiness.

Incarceration

criminal

The confinement of a person in a jail or prison as punishment for a crime or while awaiting trial.

Inchoate

criminal

Incomplete or not fully formed. An inchoate crime is one that has been begun but not completed, such as attempt or conspiracy.

Incidental Beneficiary

contract law

A third party who would benefit from contract performance but whom the parties did not intend to benefit, and who therefore has no enforcement rights.

Income Shares Model

family law

The child-support calculation method used by most states, which estimates the total amount parents would spend on the child in an intact household and apportions it between the parents based on their respective incomes.

Incorporation by Reference

estate planning

A doctrine allowing a will to incorporate an extrinsic writing in existence at the time of execution and clearly identified, making that writing part of the will.

Incumbrance

property

A claim or liability that is attached to property, potentially diminishing its value. Alternative spelling of encumbrance.

Indemnification

contracts

A contractual obligation of one party to compensate another for losses or damages. Common in business contracts and insurance policies.

Independent Contractor

employment

A worker who provides services to another entity under terms specified in a contract, maintaining control over how the work is performed and not classified as an employee.

Independent Source Doctrine

criminal procedure

An exception permitting admission of evidence initially discovered through illegal means if it was later obtained through a lawful, independent source.

Indeterminate Sentencing

criminal procedure

A system imposing a range of imprisonment (e.g., 5 to 10 years), with the actual release date determined by a parole board based on rehabilitation.

Indian Child Welfare Act

tribal

A federal law governing the removal and placement of Native American children in foster or adoptive homes, requiring preference for placement with extended family or tribal members.

Indian Civil Rights Act

tribal

A 1968 federal law imposing most of the protections of the Bill of Rights on tribal governments in their dealings with individuals.

Indian Commerce Clause

tribal

The provision of the U.S. Constitution granting Congress the power to regulate commerce with Indian tribes, forming a basis for federal Indian law.

Indian Country

tribal

A legal term defined by federal statute encompassing all land within the limits of any Indian reservation, dependent Indian communities, and Indian allotments.

Indian Gaming Regulatory Act

tribal

A federal law establishing the framework for the operation and regulation of gaming on Indian lands, requiring tribal-state compacts for Class III gaming.

Indian Reorganization Act

tribal

A 1934 federal law reversing the allotment policy, encouraging tribal self-governance, and providing for the establishment of tribal constitutions and corporate charters.

Indictment

criminal

A formal written accusation issued by a grand jury charging a person with a crime, based on a finding of probable cause.

Indictment

criminal procedure

A formal written accusation by a grand jury charging a person with a serious crime, required by the Fifth Amendment for federal felonies.

Induced Infringement

intellectual property

Liability for actively encouraging or inducing infringement by others, recognized in copyright (MGM v. Grokster) and patent law (35 U.S.C. Section 271(b)).

Ineffective Assistance of Counsel

criminal procedure

A Sixth Amendment claim that defense counsel's performance was deficient and prejudiced the outcome, evaluated under the Strickland test.

Inevitable Discovery

criminal procedure

An exception allowing admission of illegally obtained evidence if the prosecution proves it would inevitably have been discovered through lawful means.

Infraction

criminal

A minor violation of a law or rule, less serious than a misdemeanor, typically punishable only by a fine.

Infringement

intellectual property

The unauthorized use of a protected intellectual property right, such as a patent, copyright, or trademark.

Infringement

intellectual property

The unauthorized making, using, offering to sell, selling, or importing of a claimed invention during the patent term, actionable under 35 U.S.C. Section 271.

Infringement Analysis

ip

The process of comparing an accused product or process to the claims of a patent to determine whether the patent's rights have been violated.

Infringement Claim

ip

A legal assertion by an IP owner that another party has violated their exclusive rights under patent, copyright, or trademark law.

Inheritance

estate

Property or assets received from a deceased person through a will or intestate succession.

Initial Public Offering

securities

The first sale of a company's stock to the public, transitioning the company from private to public ownership.

Injunction

civil procedure

A court order requiring a party to do or refrain from doing a specific act. Types include temporary restraining orders, preliminary injunctions, and permanent injunctions.

Injunction

contract law

An equitable order requiring a party to do or refrain from doing a specific act, available in contract cases to enforce negative covenants such as non-competes.

Injunctive Relief in Patent

ip

A court order directing the infringer to stop making, using, or selling the patented invention, granted based on a four-factor equitable test.

Innocent Misrepresentation

contract law

A false assertion made honestly and without negligence, which may still permit rescission though not damages under modern contract doctrine.

Innocent Spouse Relief

tax

A provision allowing a spouse to be relieved of joint tax liability when the other spouse improperly reported or omitted income on a joint return without the innocent spouse's knowledge.

Innocent-Owner Defense

criminal procedure

A statutory defense to civil forfeiture for owners who did not know of, or took reasonable steps to prevent, the property's illegal use.

Insane Delusion

estate planning

A persistent false belief, unsupported by evidence, that materially affects the dispositions in a will, invalidating those provisions to which the delusion relates.

Insanity Defense

criminal procedure

An affirmative defense asserting that the defendant lacked criminal responsibility due to a severe mental disease or defect, with standards varying by jurisdiction.

Inside Basis

business

The partnership's basis in its assets, which generally equals the partners' aggregate outside basis at formation and is adjusted for partnership-level activity.

Insider Trading

securities

The buying or selling of a publicly traded security by someone who possesses material nonpublic information about that security.

Insolvency

bankruptcy

The condition of being unable to pay debts as they become due. A prerequisite for many bankruptcy filings.

Insolvency

bankruptcy

A financial condition where a person's or entity's liabilities exceed the fair market value of their assets, or where they are unable to pay debts as they come due.

Installment Agreement

tax

An arrangement with the IRS allowing a taxpayer to pay their tax liability over time through regular monthly payments.

Integration

estate planning

The doctrine identifying which physical pages comprise the will, requiring that all sheets be present at execution and intended by the testator to be part of the document.

Integration Clause

contract law

A contractual provision declaring the writing to be the complete and final expression of the parties' agreement, strengthening parol evidence exclusion.

Intellectual Property

intellectual property

Legal rights protecting creations of the mind, including patents, copyrights, trademarks, and trade secrets.

Intended Beneficiary

contract law

A third party whom the contracting parties intended to benefit and who acquires enforceable rights under the contract.

Intent

criminal

The state of mind accompanying an act. In criminal law, intent (mens rea) is a key element in determining culpability.

Intent-to-Use Application

intellectual property

A trademark application filed under Section 1(b) of the Lanham Act based on a bona fide intent to use the mark in commerce, requiring later filing of a statement of use to mature into registration.

Intentionally Defective Grantor Trust

tax

A trust deliberately drafted to be a grantor trust for income tax purposes (so grantor pays the tax) while being completed for transfer tax purposes, enabling tax-efficient wealth transfer.

Inter Partes Review

ip

A post-grant proceeding before the Patent Trial and Appeal Board to challenge the validity of a patent based on prior art consisting of patents or printed publications.

Inter Partes Review

intellectual property

A USPTO administrative trial proceeding before the PTAB allowing a third party to challenge the validity of issued patent claims based on prior art patents and printed publications.

Interlocutory

civil procedure

A temporary or provisional court order that is not a final judgment, such as a preliminary injunction.

Interlocutory Appeal

civil procedure

An appeal from a non-final order, permitted only in limited circumstances such as 28 USC 1292(a)(1) injunctions or by certification under 1292(b).

Interrogatories

civil procedure

Written questions under Rule 33 served on another party, who must answer or object under oath within 30 days, limited to 25 questions without leave of court.

Interrogatory

civil procedure

A set of written questions sent by one party to another during the discovery phase of litigation, which must be answered under oath.

Interstate Commerce

constitutional

Commercial activity that crosses state borders, which Congress has the power to regulate under the Commerce Clause of the Constitution.

Intervention

civil procedure

The procedure under Rule 24 by which a non-party joins ongoing litigation, either as of right when it has a protectable interest or permissively at the court's discretion.

Intestate

estate

Dying without a valid will. The deceased person's property is distributed according to state intestacy laws.

Related:willprobate

Intestate

estate planning

Dying without a valid will, causing the decedent's probate estate to pass to heirs according to the state's intestate succession statute.

Intestate Succession

estate planning

The statutory scheme that distributes the property of a person who dies without a valid will, typically prioritizing surviving spouse, descendants, parents, and more distant relatives in defined shares.

Involuntary Manslaughter

criminal

The unintentional killing of a person through criminal negligence or during the commission of a non-felony crime.

Involuntary Petition

bankruptcy

A bankruptcy case filed against a debtor by creditors, forcing the debtor into bankruptcy if the creditors can show the debtor is generally not paying debts as they come due.

Involuntary TPR

family law

A court-ordered termination of parental rights over the parent's objection, based on statutory grounds such as abandonment, chronic abuse, or failure to remedy conditions leading to removal.

IPR Petition

intellectual property

A petition filed by a third party initiating an inter partes review proceeding before the PTAB, subject to a one-year time bar from service of an infringement complaint on the petitioner.

Iqbal Plausibility

civil procedure

The extension in Ashcroft v. Iqbal (2009) of the Twombly plausibility standard to all civil cases, requiring courts to disregard conclusory allegations.

Irrebuttable Presumption

evidence

A presumption that conclusively establishes a fact and cannot be overcome by evidence, functioning effectively as a rule of substantive law.

Irreconcilable Differences

family law

A no-fault ground for divorce premised on the parties' inability to resolve fundamental conflicts, supporting dissolution without proof of misconduct.

Irresistible Impulse Test

criminal procedure

An insanity standard adding a volitional component to M'Naghten, asking whether the defendant could control their conduct even if they knew it was wrong.

Irretrievable Breakdown

family law

A no-fault ground for divorce indicating that the marriage cannot be repaired, typically requiring a sworn statement and sometimes a waiting period before the decree may issue.

ISO (Incentive Stock Option)

business

A type of stock option that, if statutory requirements are satisfied, receives favorable tax treatment under IRC Section 422, with no ordinary income on exercise (subject to AMT) and capital gain on qualifying dispositions.

Itemized Deduction

tax

Specific expenses that individual taxpayers can deduct from adjusted gross income instead of taking the standard deduction, including mortgage interest, state taxes, and charitable contributions.

Itemized Deduction

tax

Deductions claimed on Schedule A in lieu of the standard deduction, including state and local taxes (subject to SALT cap), mortgage interest, charitable contributions, and certain medical expenses.

J

J.E.B. Challenge

criminal procedure

An extension of Batson barring peremptory strikes based on gender, established in J.E.B. v. Alabama ex rel. T.B.

Jencks Act

criminal procedure

A federal statute (18 U.S.C. 3500) requiring the government to produce prior statements of witnesses after they testify on direct examination, for use in cross-examination.

Joinder

civil procedure

The joining of parties or claims in a single lawsuit to promote judicial efficiency.

Joinder

civil procedure

The procedural mechanism for combining parties or claims in a single action, governed by Rules 18-20 for parties and claims and Rule 19 for required parties.

Joint and Several Liability

tort

A legal doctrine making each defendant independently liable for the full amount of damages, regardless of their individual share of fault.

Joint Defense Privilege

evidence

A doctrine permitting co-defendants and their counsel to share privileged information for a common defense without waiving the underlying privilege.

Joint Employer

employment

A legal doctrine in which two or more entities are considered to share control over an employee's terms and conditions of employment, making both liable for labor law compliance.

Joint Physical Custody

family law

An arrangement in which the child spends substantial time residing with each parent, often roughly equal but always more than mere visitation.

Joint Tenancy

property

A form of co-ownership of property where two or more persons hold equal shares with the right of survivorship.

Joint Tenancy with Right of Survivorship

estate planning

A form of co-ownership in which, upon the death of one joint tenant, that tenant's interest passes automatically to the surviving joint tenants outside of probate.

Joint Work

intellectual property

A work prepared by two or more authors with the intention that their contributions be merged into inseparable or interdependent parts of a unitary whole, with each author owning an equal undivided interest.

Journalist's Privilege

evidence

A qualified privilege, recognized in many jurisdictions, protecting reporters from compelled disclosure of confidential sources and unpublished information.

Judge

courts

A public official appointed or elected to preside over and decide cases in a court of law.

Judge Advocate

military

A military officer who is a licensed attorney serving as a legal adviser, prosecutor, or defense counsel within the military justice system.

Judgment

civil procedure

The final decision of a court resolving the dispute between the parties and determining their rights and obligations.

Judgment as Matter of Law

civil procedure

A motion under Rule 50(a) at trial that, considering the evidence, no reasonable jury could find for the nonmoving party on a particular issue.

Judgment of Acquittal

criminal procedure

A judicial finding of not guilty entered when the prosecution's evidence is insufficient as a matter of law to sustain a conviction.

Judicial Admission

contract law

An admission in court pleadings or testimony that a contract was made, which under UCC 2-201(3)(b) may satisfy the statute of frauds for the quantity admitted.

Judicial Estoppel

civil procedure

An equitable doctrine that prevents a party from asserting a position in litigation that contradicts a position successfully asserted in a prior proceeding.

Judicial Notice

evidence

A court's acceptance of a well-known fact without requiring formal proof, such as the date of a holiday or a scientific principle.

Related:evidencefact

Judicial Notice

evidence

A court's acceptance, without formal proof, of facts that are not subject to reasonable dispute because they are generally known or readily verifiable.

Judicial Review

constitutional

The power of courts to examine legislative and executive actions and determine whether they are constitutional.

Jurisdiction

courts

The authority of a court to hear and decide a case. Includes subject-matter jurisdiction (types of cases) and personal jurisdiction (authority over parties).

Jurisdiction Conflict Convention

family law

A treaty or interstate compact resolving competing claims of authority between courts over the same family-law matter, ensuring that only one forum proceeds and others defer.

Jurisprudence

general

The theory and philosophy of law, or the body of legal knowledge and principles.

Jury

courts

A group of citizens selected to hear evidence in a trial and render a verdict based on the facts presented.

Jury Duty

civil procedure

The civic obligation to serve as a juror in a court of law when summoned. Federal law (28 U.S.C. § 1866) and state statutes prohibit employers from penalizing employees for jury service. Exemptions vary by jurisdiction but may include age, prior service, undue hardship, and certain occupations.

Jury Instructions

civil procedure

Directions given by a judge to a jury explaining the applicable law and how to apply it to the facts of the case.

Related:juryverdict

Jury Instructions

criminal procedure

The judge's directions to the jury explaining the applicable law, elements of the offense, and standards for evaluating evidence.

Jus Sanguinis

immigration

Latin for 'right of blood,' the principle under which citizenship is transmitted by descent from a citizen parent regardless of place of birth.

Jus Soli

immigration

Latin for 'right of soil,' the principle under which citizenship is granted to virtually anyone born in U.S. territory, codified in the Fourteenth Amendment.

Just Compensation

property

The payment the government must make to a property owner when taking private property through eminent domain, typically fair market value.

Just Compensation

real estate

The fair market value that the government must pay a property owner when taking private property through eminent domain.

Juvenile

criminal

A person who has not yet reached the age of legal majority (typically 18). Juvenile proceedings are generally separate from adult criminal proceedings.

K

K-1

business

Schedule K-1 is the IRS form by which a partnership, S corporation, estate, or trust reports each partner's, shareholder's, or beneficiary's share of income, deductions, and credits for the year.

K-1 Visa

immigration

A nonimmigrant visa for the fiancé(e) of a U.S. citizen, allowing entry to the United States for the purpose of marriage within 90 days.

Kastigar Hearing

criminal procedure

A pretrial hearing where the government must prove that its evidence comes from legitimate sources wholly independent of the defendant's compelled testimony.

Kidnapping

criminal

The crime of unlawfully seizing and detaining a person against their will, often by force, threat, or deception.

KSR

intellectual property

KSR International Co. v. Teleflex Inc. (2007), the Supreme Court case that loosened the standard for combining prior art references to establish obviousness, rejecting rigid application of the teaching-suggestion-motivation test.

Kumho Extension

evidence

The Supreme Court's holding in Kumho Tire v. Carmichael extending Daubert's gatekeeping role to all expert testimony, including technical and experience-based opinions.

L

L-1 Visa

immigration

A nonimmigrant visa allowing multinational companies to transfer executives, managers, or specialized knowledge workers from a foreign office to a U.S. office.

L-1A Intracompany Manager

immigration

A non-immigrant visa for executives or managers transferring from a foreign affiliate to a related U.S. office, with a maximum stay of seven years and a clear path to EB-1C permanent residence.

L-1B Specialized Knowledge

immigration

A non-immigrant visa for employees with specialized knowledge of a multinational company's products, processes, or procedures transferring to a related U.S. office, capped at five years.

Labor Certification

immigration

A process requiring an employer to demonstrate that there are no qualified U.S. workers available for a position before sponsoring a foreign worker for permanent residence.

Labor Union

employment

An organization of workers formed to protect and advance members' interests through collective bargaining with employers regarding wages, benefits, and working conditions.

Laches

civil procedure

An equitable defense asserting that the plaintiff unreasonably delayed in asserting a claim, causing prejudice to the defendant.

Landlord

property

The owner of real property who rents or leases it to a tenant in exchange for periodic payment (rent).

Related:tenantlease

Landlord-Tenant Law

real estate

The body of law governing the rights and obligations of landlords and tenants in residential and commercial lease agreements.

Lanham Act

ip

The principal federal trademark statute governing trademark registration, protection, and unfair competition in the United States.

Lapse

estate planning

The failure of a bequest because the beneficiary predeceases the testator, causing the gift to fall into the residuary unless saved by an anti-lapse statute.

Larceny

criminal

The unlawful taking of another person's personal property with the intent to permanently deprive them of it. Also known as theft.

Latent Ambiguity

contract law

A hidden ambiguity not apparent from the contract's face but revealed when its terms are applied to the subject matter, traditionally permitting extrinsic evidence.

Law of War

military

The body of international law governing the conduct of armed conflict, including the treatment of prisoners, civilians, and the means and methods of warfare.

Lawsuit

civil procedure

A legal action brought by one party against another in a court of law to enforce a right or seek a remedy.

Lay Opinion FRE 701

evidence

Opinion testimony by a non-expert witness, admissible when rationally based on perception and helpful to a clear understanding of the testimony.

Lease

property

A contract granting the use of property (real or personal) for a specified period in exchange for periodic payments.

Lease

real estate

A contract granting the use and possession of real property for a specified period in exchange for rent.

Legislative Facts

evidence

Facts relating to legal reasoning and policy that courts consider when interpreting law, distinct from facts about the parties' dispute.

Lemon Law

general

Consumer protection laws that provide remedies for buyers of vehicles that repeatedly fail to meet quality and performance standards.

Leon Good Faith

criminal procedure

The specific good-faith rule from United States v. Leon (1984) shielding evidence obtained by officers who reasonably relied on a facially valid search warrant.

Lesser-Included Offense

criminal procedure

A crime whose elements are entirely contained within those of a greater offense, allowing the jury to convict on the lesser charge instead.

Letters of Administration

estate planning

The court-issued document granting an administrator authority to act on behalf of an estate when there is no will or no qualified executor.

Letters Testamentary

estate

A court document authorizing an executor to administer a deceased person's estate according to the will.

Letters Testamentary

estate planning

The official document issued by the probate court to an executor named in a will, evidencing authority to act on behalf of the estate.

Levy

general

The legal seizure of property to satisfy a debt or judgment. Also, to impose a tax.

Liability

tort

Legal responsibility for one's acts or omissions. A finding of liability in a civil case typically results in an obligation to pay damages.

Libel

tort

A form of defamation involving false written or published statements that harm a person's reputation.

License

general

A legal permission to engage in an activity that would otherwise be unlawful, such as driving, practicing law, or using intellectual property.

License Suspension for Arrears

family law

A state enforcement tool authorized by federal law that suspends driver's, professional, or recreational licenses of parents who fall significantly behind on child support.

Licensing Agreement

ip

A contract granting permission to use patented technology, copyrighted material, or a trademark under specified terms and conditions.

Lien

property

A legal claim or charge on property as security for the payment of a debt or obligation. Common types include mortgage liens, tax liens, and mechanic's liens.

Lien

real estate

A legal claim on property as security for the payment of a debt or obligation.

Life Estate

real estate

An ownership interest in real property that lasts only for the lifetime of a designated person, after which ownership passes to a remainder holder.

Life Estate

estate planning

An ownership interest in real property limited to the duration of a person's life, after which title passes automatically to the remainderman.

Life Plus 70

intellectual property

The standard term of copyright protection for works created by individual authors on or after January 1, 1978, extending 70 years after the author's death.

Life Tenant

estate planning

The holder of a life estate, entitled to use and enjoy the property during life but obligated not to commit waste that impairs the remainder interest.

Lifetime Exemption

tax

The total amount a person may transfer during life or at death without owing federal estate or gift tax, set at historically high levels under TCJA and scheduled to sunset.

Lift Stay Motion

bankruptcy

A creditor's request to the bankruptcy court to remove the automatic stay protection so the creditor can pursue remedies against the debtor's property.

Likelihood of Confusion

intellectual property

The central test for trademark infringement, asking whether reasonably prudent consumers are likely to be confused as to the source, sponsorship, or affiliation of goods or services.

Limitation of Actions

civil procedure

Statutes establishing the maximum time period within which a legal proceeding must be initiated. Also called statutes of limitations.

Liquidated Damages

contract law

A contractual provision specifying damages in advance, enforceable when the actual damages are difficult to ascertain and the amount is a reasonable forecast of harm.

Liquidation

bankruptcy

The process of selling a debtor's nonexempt assets and distributing the proceeds to creditors, the central mechanism of Chapter 7 bankruptcy.

Liquidation Preference

business

The amount preferred stockholders are entitled to receive on a liquidation, sale, or other liquidity event before any distribution to common stockholders, typically 1x the original investment.

Lis Pendens

property

Latin for 'pending litigation.' A notice filed with the county recorder indicating that a lawsuit involving real property is pending.

Lis Pendens

real estate

A notice filed with the county recorder indicating that a lawsuit affecting title to real property is pending.

Litigation

civil procedure

The process of resolving disputes through the court system, including filing lawsuits, discovery, motions, trial, and appeals.

Related:lawsuittrial

Living Will

estate

A legal document expressing a person's wishes regarding medical treatment in the event they become incapacitated and unable to communicate.

LLC

business

A Limited Liability Company — a business structure combining the liability protection of a corporation with the tax flexibility of a partnership.

LLC

business

A limited liability company is an unincorporated business entity that combines the limited liability of a corporation with the pass-through taxation and operational flexibility of a partnership. Owners are called members and may include individuals, corporations, or other LLCs.

Long-Arm Statute

civil procedure

A state statute authorizing courts to exercise personal jurisdiction over nonresident defendants whose contacts with the state satisfy constitutional limits.

Long-Term Capital Gain

tax

Profit from the sale of an asset held for more than one year, taxed at preferential rates lower than ordinary income tax rates.

Long-Term Capital Gain

tax

Gain on the sale of a capital asset held for more than one year, taxed at preferential rates of 0%, 15%, or 20% depending on the taxpayer's income.

Lucid Interval

estate planning

A period of mental clarity during which an otherwise incapacitated person possesses testamentary capacity, allowing a will made during that interval to be upheld.

M

M'Naghten Rule

criminal procedure

The traditional cognitive test for insanity, asking whether the defendant knew the nature of the act or that it was wrong.

MACRS

tax

The Modified Accelerated Cost Recovery System under IRC Section 168, the primary federal depreciation method for most tangible property placed in service after 1986, with prescribed recovery periods and methods.

Magistrate

courts

A judicial officer with limited authority, often handling preliminary criminal proceedings, minor offenses, and pretrial matters.

Related:judgejustice

Mailbox Rule

contract law

The default rule that acceptance is effective upon dispatch (e.g., mailing), while revocations, rejections, and counteroffers are effective on receipt.

Main Purpose Rule

contract law

An exception removing a suretyship promise from the statute of frauds when the surety's main purpose is to advance its own economic interest.

Major Crimes Act

tribal

A federal statute granting federal courts jurisdiction over certain serious crimes committed by Indians in Indian country.

Malfeasance

general

Wrongful conduct or illegal activity, especially by a public official.

Malingering

criminal procedure

The intentional fabrication or exaggeration of physical or mental symptoms, often to avoid prosecution or punishment, distinguished from genuine illness.

Malpractice

tort

Professional negligence — the failure of a professional (doctor, lawyer, accountant) to meet the standard of care, resulting in harm to the client or patient.

Manager-Managed LLC

business

An LLC in which management authority is vested in one or more designated managers (who may or may not be members), while non-managing members function more like passive investors. This structure is common when there are passive investors or large numbers of members.

Mandamus

civil procedure

A court order compelling a government official or entity to perform a mandatory duty.

Mandamus

civil procedure

An extraordinary writ from a superior court commanding a public official or lower court to perform a clear, non-discretionary duty.

Mandate

civil procedure

An official order or command from a court, especially an appellate court directing a lower court to take specific action.

Related:remandappeal

Mandatory Minimum

criminal procedure

A statutorily required minimum sentence that the court must impose upon conviction, regardless of mitigating factors.

Mandatory Redemption

business

A redemption right that the company is obligated to fulfill on a fixed date or upon specified events, often resembling a debt instrument from a balance-sheet perspective.

Manslaughter

criminal

The unlawful killing of a person without premeditation or malice aforethought. Can be voluntary (in the heat of passion) or involuntary (through criminal negligence).

Margin

securities

Borrowed money used to purchase securities, subject to Regulation T and maintenance requirements set by the Federal Reserve and FINRA.

Marginal Tax Rate

tax

The tax rate applied to the next dollar of income, determined by which bracket that dollar falls into in the progressive rate schedule.

Marital Deduction

tax

An unlimited estate and gift tax deduction for transfers to a U.S. citizen spouse under IRC Sections 2056 and 2523, effectively deferring transfer tax until the surviving spouse's death.

Marital Privilege

evidence

Two related privileges: testimonial privilege barring spousal testimony in criminal cases, and confidential communications privilege protecting marital communications.

Marital Property

family

Property acquired during a marriage that is subject to division upon divorce, as opposed to separate property.

Marital Property

family law

Assets and debts acquired by either spouse during the marriage, regardless of how titled, that are subject to division in a divorce under either equitable distribution or community property rules.

Market Manipulation

securities

Artificial inflation or deflation of a security's price through deceptive trading practices such as wash trading, spoofing, or pump-and-dump schemes.

Markman Hearing

ip

A pretrial hearing in patent litigation where the court construes the meaning and scope of disputed patent claim terms.

Markman Hearing

intellectual property

A pretrial hearing in patent litigation at which the court construes the meaning of disputed claim terms, named after Markman v. Westview Instruments (1996).

Master Calendar Hearing

immigration

The initial preliminary appearance in immigration court at which the noncitizen pleads to the allegations in the Notice to Appear, identifies any applications for relief, and receives scheduling for individual merits hearings.

Material Fact

civil procedure

A fact that, under the governing substantive law, could affect the outcome of the case and therefore can preclude summary judgment if genuinely disputed.

Material Misrepresentation

securities

A false statement of fact that is significant enough to influence an investor's decision to buy, sell, or hold a security.

Material Nonpublic Information

securities

Information about a company that has not been made available to the general public and would likely affect the company's stock price if disclosed.

Material Participation

tax

Active and regular involvement in a trade or business activity on a substantial basis, measured by seven tests in the Section 469 regulations, that allows losses to escape passive limitations.

Material Witness

evidence

A witness whose testimony is important enough to a case that they may be detained to ensure their availability.

Maximum Contaminant Level

environmental

The highest level of a contaminant allowed in drinking water under the Safe Drinking Water Act, enforceable by the EPA.

McQuiggin v Perkins

criminal procedure

A 2013 Supreme Court decision recognizing that a credible showing of actual innocence may excuse AEDPA's statute of limitations in habeas cases.

Means Test

bankruptcy

A formula used in Chapter 7 bankruptcy to determine whether a debtor's income is low enough to file for Chapter 7 or whether they must file under Chapter 13.

Means-Plus-Function Claim

ip

A patent claim element described by the function it performs rather than the specific structure, interpreted to cover the corresponding structure disclosed in the specification and its equivalents.

Mechanic's Lien

real estate

A statutory lien placed on real property by a contractor, subcontractor, or material supplier who has not been paid for work performed or materials furnished.

Mediation

civil procedure

A form of alternative dispute resolution where a neutral third party facilitates negotiation between the parties to help them reach a voluntary agreement.

Mediation

civil procedure

A consensual dispute resolution process in which a neutral third party assists the disputants in reaching a voluntary settlement, without the power to impose a decision.

Mediation

family law

A voluntary or court-ordered process in which a neutral third party helps separating spouses negotiate agreements on custody, support, and property without imposing a decision.

Medicaid

healthcare

A joint federal-state program providing health insurance coverage to low-income individuals and families, with eligibility and benefits varying by state.

Medical Malpractice

healthcare

Professional negligence by a healthcare provider in which treatment falls below the accepted standard of care and causes injury or death to the patient.

Medicare

healthcare

A federal health insurance program primarily for individuals aged 65 and older, consisting of Part A (hospital), Part B (medical), Part C (Medicare Advantage), and Part D (prescription drugs).

Melson Formula

family law

A child-support calculation method used by Delaware, Hawaii, and Montana that first reserves a self-support amount for each parent before allocating remaining income to the child's needs.

Member-Managed LLC

business

An LLC in which all members participate directly in the day-to-day management and decision-making of the company, with each member generally having authority to bind the LLC. This is the default structure in most states unless the operating agreement provides otherwise.

Mens Rea

criminal

Latin for 'guilty mind.' The mental state or intent required to establish criminal liability, such as intent, knowledge, recklessness, or negligence.

Mens Rea

criminal procedure

The mental state or guilty mind required to establish criminal liability, ranging from purposeful intent to negligence. The Model Penal Code recognizes four levels: purposely, knowingly, recklessly, and negligently.

Mens Rea Requirement

criminal

The principle that most crimes require proof of a guilty mental state, such as intent, knowledge, recklessness, or negligence.

Mental Health Parity

healthcare

Federal and state laws requiring health insurers to provide mental health and substance use disorder benefits comparable to medical and surgical benefits.

Merger

business

The combination of two or more companies into a single entity. In contract law, the integration of prior agreements into a final written contract.

Merger

business

A corporate combination in which one entity is absorbed into another or two entities combine into a new entity, with the surviving entity assuming the assets and liabilities of the constituents by operation of law.

Merger Doctrine

criminal procedure

The principle that lesser-included offenses merge into the greater offense for conviction, preventing multiple punishments for the same conduct.

Military Administrative Separation

military

The process of discharging a service member from the military outside of the court-martial system, for reasons such as misconduct, performance deficiencies, or medical conditions.

Military Appellate Court

military

A court within each branch of the armed forces that reviews court-martial convictions and sentences for legal errors.

Military Commission

military

A tribunal convened to try individuals for violations of the law of war and related offenses, distinct from courts-martial that try service members.

Military Extraterritorial Jurisdiction Act

military

A federal statute extending U.S. criminal jurisdiction to certain civilians and contractors accompanying the armed forces overseas.

Military Judge

military

A judge advocate certified to preside over courts-martial, ruling on questions of law, instructing panel members, and imposing sentences.

Military Protective Order

military

An order issued by a military commander directing a service member to refrain from contact with a specified person, similar to a civilian restraining order.

Military Rule of Evidence

military

Rules governing the admissibility of evidence in courts-martial, adapted from the Federal Rules of Evidence with modifications specific to military proceedings.

Minimum Contacts

courts

The constitutional requirement that a defendant must have sufficient connections with a forum state before the state's courts can exercise personal jurisdiction.

Minimum Contacts

civil procedure

The constitutional standard from International Shoe v. Washington (1945) requiring sufficient connections with the forum so that suit does not offend traditional notions of fair play and substantial justice.

Minimum Necessary Standard

healthcare

A HIPAA requirement that covered entities limit the use, disclosure, and request of protected health information to the minimum amount needed to accomplish the intended purpose.

Minor

family

A person who has not yet reached the age of legal majority (typically 18) and lacks full legal capacity.

Miranda Rights

criminal

The rights that law enforcement must inform a suspect of upon arrest and before custodial interrogation, including the right to remain silent and the right to an attorney.

Miranda Rights

criminal procedure

The constitutional protections recognized in Miranda v. Arizona (1966), including the right to remain silent, to have counsel present, and to appointed counsel if indigent.

Miranda Warning

criminal procedure

The advisement police must give a suspect before custodial interrogation, informing them of the right to remain silent and to counsel. Failure to administer it generally bars use of resulting statements.

Mirror Image Rule

contract law

The common-law principle that an acceptance must match the terms of the offer exactly, with any deviation constituting a counteroffer rather than acceptance.

Misclassification

employment

The incorrect classification of an employee as an independent contractor, potentially depriving the worker of benefits, protections, and proper tax treatment.

Misdemeanor

criminal

A criminal offense less serious than a felony, typically punishable by fines, probation, or imprisonment for up to one year.

Misprision

criminal

The crime of concealing knowledge of a felony or an act of treason from authorities.

Misrepresentation

contracts

A false statement of material fact made to induce another party to enter into a contract or transaction.

Misrepresentation

contract law

An assertion not in accord with the facts, which may be fraudulent, negligent, or innocent and may render a contract voidable by the misled party.

Mistake

contract law

An erroneous belief about a material fact existing at the time of contracting, which may render the contract voidable depending on whether it was mutual or unilateral.

Mistake of Fact

criminal procedure

A defense negating mens rea when the defendant held an honest, and sometimes reasonable, belief about a fact that, if true, would make the conduct lawful.

Mistake of Fact

contract law

An erroneous belief about a present or past fact, distinguishable from a mistaken prediction about the future and generally a stronger basis for relief than mistake of law.

Mistake of Law

criminal procedure

A defense rarely accepted in criminal law, holding that ignorance or misunderstanding of the law generally does not excuse criminal conduct.

Mistake of Law

contract law

An erroneous belief about the legal effect of facts, historically not a ground for relief but increasingly recognized under the modern Restatement approach.

Mistrial

criminal

A trial that has been terminated before its conclusion due to a procedural error, hung jury, or other extraordinary circumstance.

Mitigation

general

The duty of an injured party to take reasonable steps to minimize their damages. Also, factors presented at sentencing to argue for a lighter punishment.

Mitigation

contract law

The duty of the non-breaching party to take reasonable steps to limit its losses after a breach, with avoidable damages not recoverable.

Modification

contract law

A change in the terms of an existing contract, which under the common law requires new consideration but under UCC 2-209 needs only good faith.

Modus Operandi

evidence

A distinctive pattern of criminal conduct so unique that it identifies the defendant as the perpetrator, admissible under FRE 404(b).

Monopoly

business

Exclusive control of a market by a single entity, which may violate federal antitrust laws if achieved through anticompetitive practices.

Moot

civil procedure

A legal issue that has become academic or no longer presents a live controversy, making judicial resolution unnecessary.

Moral Turpitude

criminal

An act or behavior that violates community standards of justice, honesty, or good morals. Crimes involving moral turpitude can affect immigration status.

Mortgage

property

A loan secured by real property, where the borrower grants the lender a security interest in the property until the loan is repaid.

Mortgage

real estate

A legal instrument giving a lender a security interest in real property as collateral for a loan, with the borrower retaining possession.

Mortgage Interest Deduction

tax

The itemized deduction for interest paid on acquisition indebtedness secured by a qualified residence, capped at $750,000 of principal for loans originated after December 15, 2017.

Motion

civil procedure

A formal request made to a court asking for a ruling or order on a specific issue.

Related:briefhearing

Motion for Judgment on Pleadings

civil procedure

A post-answer motion under Rule 12(c) seeking judgment based solely on the pleadings, evaluated under the same standard as a Rule 12(b)(6) motion.

Motion for New Trial

civil procedure

A post-verdict motion under Rule 59 seeking a new trial on grounds such as erroneous evidentiary rulings, jury misconduct, or verdict against the weight of the evidence.

Motion for Summary Judgment

civil procedure

A pretrial motion under Rule 56 seeking judgment as a matter of law when there is no genuine dispute of material fact.

Motion in Limine

criminal procedure

A pretrial motion seeking an evidentiary ruling, typically to exclude prejudicial or inadmissible evidence before it is offered at trial.

Motion to Compel

civil procedure

A request under Rule 37(a) for a court order requiring an opposing party or non-party to respond to discovery requests after a good faith conference fails.

Motion to Dismiss

civil procedure

A motion asking the court to dismiss a case for legal insufficiency, such as failure to state a claim or lack of jurisdiction.

Motion to Dismiss

civil procedure

A pretrial motion under Rule 12(b) seeking dismissal on grounds such as lack of jurisdiction, improper venue, defective service, or failure to state a claim.

Motion to Quash

civil procedure

A request to invalidate a subpoena, typically under Rule 45(d), on grounds such as undue burden, privilege, or geographical limits.

Motion to Set Aside Default

civil procedure

A request under Rule 55(c) to vacate an entry of default for good cause, or to set aside a default judgment under the stricter standards of Rule 60(b).

Motion to Suppress

criminal procedure

A pretrial motion seeking exclusion of evidence allegedly obtained in violation of the defendant's constitutional rights.

Motion to Transfer

civil procedure

A request under 28 USC 1404(a) to move a properly filed federal action to another district where it could have been brought, for convenience and the interests of justice.

Motive

evidence

A non-propensity purpose for which prior bad acts may be admitted, showing the defendant had a reason to commit the charged offense.

Move-Away Case

family law

A contested proceeding addressing a custodial parent's proposed relocation, in which the court weighs the relocating parent's reasons, the impact on the child, and the feasibility of preserving the non-moving parent's relationship.

Murder

criminal

The unlawful killing of a person with malice aforethought (premeditation and deliberation). First-degree murder involves planning; second-degree murder does not.

Mutual Mistake

contract law

A shared erroneous belief of both parties about a basic assumption of the contract that materially affects the agreed exchange, generally rendering the contract voidable.

Mutuality of Estoppel

civil procedure

The historical requirement that issue preclusion be available only between parties bound by the prior judgment, largely abandoned in modern federal practice.

MVRA

criminal procedure

The Mandatory Victims Restitution Act of 1996, requiring restitution in specified federal offenses regardless of the defendant's ability to pay.

MY LEGS Exceptions

contract law

A mnemonic for contracts within the statute of frauds: Marriage, contracts not performable within one Year, Land, Executor promises, Goods over $500, and Suretyship.

N

N-400

immigration

The Application for Naturalization filed with USCIS by lawful permanent residents seeking to become U.S. citizens, supported by evidence of continuous residence, physical presence, and good moral character.

NACARA

immigration

The Nicaraguan Adjustment and Central American Relief Act of 1997, providing special forms of relief from removal and adjustment of status to certain nationals of Nicaragua, Cuba, El Salvador, Guatemala, and former Soviet bloc countries.

Naked License

intellectual property

A trademark license granted without quality control by the licensor over the licensee's use of the mark, which can result in abandonment of trademark rights.

Narrow-Based Weighted Average

business

A weighted-average anti-dilution formula counting only outstanding preferred (or a narrower base) in the denominator, producing greater protection than broad-based.

National Ambient Air Quality Standards

environmental

EPA standards establishing permissible levels of criteria pollutants in outdoor air to protect public health and welfare under the Clean Air Act.

National Interest Waiver

immigration

An exemption from the labor certification requirement for employment-based immigrants whose work is deemed to be in the national interest of the United States.

National Labor Relations Act

employment

A federal law protecting the rights of employees to organize, form labor unions, bargain collectively, and engage in concerted activity for mutual aid or protection.

National Pollutant Discharge Elimination System

environmental

The permitting program under the Clean Water Act that regulates point source discharges of pollutants into waters of the United States.

Natural Resource Damages

environmental

Monetary compensation for injury to, destruction of, or loss of natural resources caused by a release of hazardous substances, recoverable under CERCLA and the Oil Pollution Act.

Naturalization

immigration

The legal process by which a foreign national becomes a U.S. citizen after meeting eligibility requirements and passing required tests.

Naturalization

immigration

The process by which a lawful permanent resident becomes a U.S. citizen after meeting residency, language, civics, and good moral character requirements.

Naturalization

immigration

The legal process by which a lawful permanent resident becomes a United States citizen, generally requiring at least five years of residence, good moral character, and passage of English and civics tests.

Necessaries

contracts

Goods and services essential for a person's basic needs, such as food, clothing, shelter, and medical care. Contracts for necessaries by minors may be enforceable.

Necessity Defense

criminal procedure

A justification defense permitting otherwise criminal conduct when reasonably necessary to avoid a greater, imminent harm.

Negligence

tort

The failure to exercise the standard of care that a reasonably prudent person would exercise under similar circumstances, resulting in harm to another.

Negligent Misrepresentation

contract law

A false assertion made without reasonable care to ascertain its truth, generally supporting rescission and limited damages for those in commercial relationships.

Negotiation

general

The process of discussion and bargaining between parties to reach a mutually acceptable agreement or settlement.

NEPA

environmental

The National Environmental Policy Act, requiring federal agencies to assess the environmental effects of proposed actions before making decisions.

Net Operating Loss

tax

A loss that occurs when a taxpayer's allowable tax deductions exceed their taxable income in a given year, which may be carried forward to offset future income.

New Source Performance Standards

environmental

EPA regulations establishing emission limitations for new or modified stationary sources of air pollution in specific industrial categories.

Nisi Prius

courts

A trial court, as distinguished from an appellate court. The term refers to the court where a case is first tried.

No Contest

criminal

A plea (nolo contendere) in which the defendant does not admit guilt but accepts punishment. It cannot be used as an admission of liability in a civil case.

Related:pleaguilty

No-Contest Clause

estate planning

A will provision purporting to disinherit any beneficiary who unsuccessfully challenges the will, with varying enforceability across jurisdictions, particularly when probable cause exists for the challenge.

No-Fault Divorce

family law

A dissolution available in every state on grounds such as irreconcilable differences or irretrievable breakdown, requiring no showing of marital misconduct by either spouse.

No-Knock Warrant

criminal procedure

A search warrant authorizing officers to enter premises without first announcing their presence, typically justified by safety or evidence-destruction concerns.

No-oral-modification Clause

contract law

A contractual provision prohibiting oral modifications, given effect under UCC 2-209(2) for sale-of-goods contracts even between merchants.

NOL (Net Operating Loss)

tax

A loss arising when allowable deductions exceed gross income, available to be carried to other tax years under rules that have changed significantly under recent tax legislation.

Nolo Contendere

criminal

Latin for 'I do not wish to contend.' A plea in criminal court similar to guilty but cannot be used as an admission in civil proceedings.

Nolo Contendere

criminal procedure

A plea of no contest, accepting punishment without admitting guilt, which cannot generally be used as an admission in subsequent civil litigation.

Nominal Consideration

contract law

A token amount stated to satisfy the consideration requirement, generally insufficient under the modern rule absent an actual bargained-for exchange.

Non-Compete Agreement

employment

A contractual clause restricting an employee from working for competitors or starting a competing business for a specified period and geographic area after leaving employment.

Non-Compete Agreement

ip

A contractual restriction preventing an employee or business seller from competing with the other party for a specified time and geographic area.

Non-Disclosure Agreement

business

A contract creating a confidential relationship between parties, obligating one or both to keep certain information secret.

Non-Disclosure Agreement

employment

A contract requiring a party to keep certain information confidential, commonly used to protect trade secrets and proprietary business information.

Non-Hearsay

evidence

Out-of-court statements that fall outside the hearsay definition because they are not offered for their truth or are exempted by FRE 801(d).

Non-Immigrant Intent

immigration

The required intention of most temporary visa applicants to reside in the United States only temporarily for a specific purpose before returning home.

Non-Participating Preferred

business

Preferred stock that on a liquidation event receives the greater of its liquidation preference or its as-converted share of proceeds, but not both.

Non-Provisional

intellectual property

A regular U.S. patent application examined on the merits by the USPTO, which can claim priority to an earlier provisional application filed within 12 months.

Non-Refundable Credit

tax

A tax credit that can reduce tax liability only to zero, with any excess generally lost (though some carry over), including the Saver's Credit and foreign tax credit.

Nonattainment Area

environmental

A geographic area where the concentration of a criteria pollutant exceeds the National Ambient Air Quality Standards.

Nonconforming Use

property

A land use that was lawful before a zoning change but no longer complies with current zoning regulations. Generally allowed to continue but not expand.

Nondischargeable Debt

bankruptcy

A debt that cannot be eliminated in bankruptcy, including student loans (absent undue hardship), certain taxes, child support, and debts arising from fraud.

Nonimmigrant Visa

immigration

A visa issued to a foreign national seeking temporary entry to the United States for a specific purpose such as tourism, study, or temporary work.

Nonjudicial Punishment

military

Disciplinary action taken by a commanding officer without a court-martial, authorized under Article 15 of the UCMJ for minor offenses.

Notary Public

general

A person authorized by the state to witness the signing of documents, administer oaths, and certify the authenticity of signatures.

Notice

civil procedure

Formal notification to a party of a legal action, proceeding, or right. Due process requires adequate notice before the government deprives a person of rights.

Notice of Privacy Practices

healthcare

A document that covered entities must provide to patients describing how their protected health information may be used and disclosed and their rights under HIPAA.

Notice to Appear

immigration

A charging document issued by the Department of Homeland Security that initiates removal proceedings by notifying the foreign national of the allegations and charges.

Novation

contract law

A substituted contract that immediately discharges the original obligation by substituting a new party or new obligation, requiring the consent of all parties.

Novation vs Assignment

contract law

The distinction that assignment transfers rights while leaving the assignor liable for duties, whereas novation substitutes a new party and discharges the original.

Novelty

ip

A requirement for patentability meaning the invention must be new and not anticipated by any single prior art reference.

NSO (Non-Qualified Stock Option)

business

A stock option that does not meet ISO requirements and is taxed as ordinary income on the spread between fair market value and exercise price at exercise.

NTA (Notice to Appear)

immigration

The charging document on Form I-862 served by DHS that initiates removal proceedings, specifying the noncitizen's alleged removability and the date of the first immigration court hearing.

Nuisance

property

An unreasonable interference with the use and enjoyment of another person's property. Can be private (affecting one party) or public (affecting the community).

Numerosity

civil procedure

The Rule 23(a)(1) requirement that the class be so numerous that joinder of all members is impracticable, typically satisfied by 40 or more members.

Nuncupative Will

estate

An oral will made during the last illness or in imminent peril of death, valid only in limited circumstances in some states.

Nuncupative Will

estate planning

An oral will spoken in the presence of witnesses, recognized only in very limited circumstances such as last-illness or military exigency in jurisdictions that still permit them.

O

O-1 Extraordinary Ability

immigration

A non-immigrant visa for individuals with extraordinary ability in the sciences, arts, education, business, or athletics, requiring extensive documentation of national or international acclaim.

Oath

general

A solemn promise to tell the truth or faithfully perform a duty, often invoking a higher power. Witnesses testify under oath.

Oath of Allegiance

immigration

The sworn declaration of loyalty to the United States that a naturalization applicant must take to complete the citizenship process, renouncing prior foreign allegiances and pledging to support the Constitution.

Objection

evidence

A formal protest raised by an attorney during trial challenging the admissibility of evidence or the propriety of a question or procedure.

Obstruction of Justice

criminal

The crime of intentionally interfering with the administration of law, including tampering with evidence, intimidating witnesses, or lying to investigators.

Obviousness

ip

A ground for rejecting or invalidating a patent if the invention would have been obvious to a person having ordinary skill in the art at the time of the invention.

Obviousness 103

intellectual property

The patentability requirement under 35 U.S.C. Section 103 that the differences between the claimed invention and prior art must not have been obvious to a person of ordinary skill in the art at the time of the invention.

Offensive Non-Mutual Estoppel

civil procedure

Use by a non-party plaintiff of issue preclusion against a defendant who lost the issue in a prior suit, permitted in federal court since Parklane Hosiery v. Shore.

Offer

contracts

A proposal by one party to another indicating a willingness to enter into a contract on specified terms.

Offer

contract law

A manifestation of willingness to enter into a bargain so made as to justify another person in understanding that assent will conclude the bargain, per Restatement (Second) 24.

Offer in Compromise

tax

An agreement between a taxpayer and the IRS to settle a tax debt for less than the full amount owed, based on the taxpayer's ability to pay.

Offering Memorandum

securities

A legal document describing a securities offering in a private placement, similar to a prospectus but used for exempt offerings.

Office Action

ip

A written communication from a patent or trademark examiner at the USPTO raising objections or rejections that the applicant must address.

Opening Statement

civil procedure

An attorney's introductory remarks at the beginning of a trial, outlining the evidence and arguments they intend to present.

Operating Agreement

business

The internal governing document of an LLC that sets forth the members' rights, duties, capital contributions, profit and loss allocations, management structure, and dissolution procedures. It is typically not filed publicly and can override most default state LLC statutes.

Opinion

courts

A judge's written explanation of the court's decision, including the legal reasoning, analysis of facts, and conclusion.

Opportunity

evidence

A non-propensity purpose allowing prior bad acts to show the defendant had the access or means necessary to commit the charged offense.

Opposition Proceeding

intellectual property

A TTAB proceeding initiated by a third party to prevent registration of a published mark on grounds such as likelihood of confusion, descriptiveness, or fraud.

OPT

immigration

Optional Practical Training, work authorization for up to 12 months available to F-1 students for employment directly related to their field of study.

Opt-In Class

civil procedure

A class structure, common under the FLSA collective action mechanism, in which members must affirmatively join to be bound and benefit from the judgment.

Opt-Out Class

civil procedure

A Rule 23(b)(3) class in which absent members are bound by the judgment unless they affirmatively request exclusion after receiving notice.

Optional Practical Training

immigration

A program allowing F-1 students to work in the United States for up to 12 months (or 36 months for STEM graduates) in a field related to their study.

Optional Practical Training

immigration

The full term for OPT, the post-completion employment authorization allowing F-1 students to gain practical experience in their academic field.

Oral Deposition

civil procedure

A deposition under Rule 30 conducted live with counsel asking questions and a court reporter transcribing the testimony, limited to one day of seven hours.

Ordinance

general

A law enacted by a municipal or local government, such as a city or county.

Original Jurisdiction

courts

The authority of a court to hear a case for the first time, as opposed to appellate jurisdiction.

Orphan Work

intellectual property

A copyrighted work whose owner cannot be identified or located after a reasonably diligent search, creating uncertainty about licensing and use.

OSHA

employment

The Occupational Safety and Health Administration, the federal agency responsible for setting and enforcing workplace safety and health standards.

OSHA Citation

employment

A written notice issued by the Occupational Safety and Health Administration alleging violations of workplace safety standards and proposing penalties.

Outside Basis

business

A partner's basis in the partnership interest itself, used to determine gain or loss on sale of the interest and the deductibility of partnership losses.

Overrule

courts

When a court rejects an objection during trial, allowing the evidence or question. Also, when a higher court sets aside a lower court's precedent.

Oversight Duty

business

Directors' duty under Caremark to make a good-faith effort to implement information and reporting systems and to monitor those systems for compliance and risk.

Overtime

employment

Compensation required under the FLSA at one and a half times the regular rate of pay for hours worked in excess of 40 in a workweek by nonexempt employees.

Ozone Depleting Substance

environmental

Chemicals regulated under the Clean Air Act and the Montreal Protocol that deplete the stratospheric ozone layer, including chlorofluorocarbons and hydrochlorofluorocarbons.

P

Pardon

criminal

An executive act forgiving a person for a crime and releasing them from punishment. The President can pardon federal crimes; governors can pardon state crimes.

Parent Company

business

A company that owns enough voting stock in another company (the subsidiary) to control its management and operations.

Parental Kidnapping

family law

The wrongful taking, retention, or concealment of a child by one parent in violation of the other parent's custodial rights, addressed by both federal law (the Parental Kidnapping Prevention Act) and state criminal statutes.

Parental Relocation

family law

A request by a custodial parent to move with the child to a distant location, typically requiring court approval or notice to the other parent because it materially affects existing parenting time.

Parental Termination

family law

A court order permanently severing the legal relationship between a parent and child, ending all rights and obligations and freeing the child for adoption.

Parenting Plan

family law

A written document, often required by statute, that sets out the allocation of decision-making, residential schedule, holiday arrangements, and dispute-resolution procedures for separated or divorced parents.

Parenting Time

family law

The periods during which a parent is scheduled to have physical care and responsibility for the child, a modern term replacing the older concept of visitation.

Parody

intellectual property

A work that uses elements of an original to comment on or criticize the original itself, generally a strong candidate for fair use as transformative use.

Parol Evidence Rule

contracts

A legal principle that prevents parties to a written contract from introducing prior or contemporaneous oral agreements that contradict or modify the written terms.

Parol Evidence Rule

contract law

The substantive rule excluding evidence of prior or contemporaneous agreements that would contradict the terms of a final written contract.

Parole

criminal

The supervised release of a prisoner before the completion of their sentence, subject to conditions and monitoring.

Parole

immigration

Temporary permission granted by immigration authorities for a foreign national to physically enter or remain in the United States for urgent humanitarian reasons or significant public benefit.

Parole

criminal procedure

Conditional release from prison before completion of the full sentence, supervised by a parole authority and revocable for violations.

Parole in Place

immigration

A discretionary grant of parole to certain noncitizens already physically present in the United States, most commonly used for immediate family members of U.S. military personnel, allowing eligibility for adjustment of status.

Part Performance

contract law

An equitable doctrine that may take a land contract out of the statute of frauds when the buyer has paid, taken possession, and made improvements.

Partial Summary Judgment

civil procedure

A summary judgment ruling that resolves some but not all claims or issues in a case, narrowing the matters for trial.

Participating Preferred

business

Preferred stock that receives its liquidation preference and then also shares pro rata with common stock in remaining proceeds (sometimes capped).

Partition

property

The division of jointly owned property into separate portions so each owner may take individual possession of their share.

Partition

real estate

A court action to divide co-owned property among its owners, either by physical division or by sale and division of proceeds.

Partnership

business

A business arrangement where two or more persons agree to share profits and losses. Can be general, limited, or limited liability.

Partnership

tax

A business arrangement where two or more persons carry on a trade or business, with income and losses passing through to the partners' individual tax returns.

Party Admission

evidence

A non-hearsay statement under FRE 801(d)(2)(A) made by or attributable to a party and offered against that party.

Pass-Through Entity

tax

A business structure such as a partnership, S corporation, or LLC that does not pay entity-level income tax, instead passing income and deductions through to the owners' individual returns.

Pass-Through Taxation

business

A federal tax regime under which entity-level income is not taxed but instead passes through to and is taxed at the owner level, used for partnerships, S corps, and most LLCs.

Passive Activity Loss

tax

A loss from a trade or business activity in which the taxpayer does not materially participate, subject to limitations restricting its use against active or portfolio income.

Passive Activity Loss

tax

Losses from trade or business activities in which the taxpayer does not materially participate, generally deductible only against passive income under IRC Section 469.

Past Consideration

contract law

An act done before a promise was made, which generally cannot serve as consideration because it was not bargained for at the time of the promise.

Pate Hearing

criminal procedure

A hearing held when there is bona fide doubt about a defendant's competency, required by Pate v. Robinson to protect due process.

Patent

intellectual property

A government-granted exclusive right to an inventor, allowing them to prevent others from making, using, or selling the invention for a limited period (typically 20 years).

Patent

intellectual property

A federal grant under 35 U.S.C. of the right to exclude others from making, using, selling, or importing a claimed invention for a limited period in exchange for public disclosure.

Patent Ambiguity

contract law

An ambiguity obvious on the face of the contract, sometimes treated more strictly by courts than latent ambiguity in admitting extrinsic evidence.

Patent Claims

ip

The numbered paragraphs at the end of a patent that define the scope of legal protection, specifying what the inventor has the right to exclude others from making, using, or selling.

Patent Cooperation Treaty

ip

An international treaty providing a unified procedure for filing patent applications in multiple countries through a single international application.

Patent Eligibility

ip

The threshold requirement that an invention fall within one of the four statutory categories (process, machine, manufacture, or composition of matter) and not be an abstract idea, law of nature, or natural phenomenon.

Patent Infringement

ip

The unauthorized making, using, selling, or importing of a patented invention during the term of the patent.

Patent Prosecution

ip

The process of drafting, filing, and negotiating with the USPTO to obtain a patent, including responding to office actions and amending claims.

Patent Term Extension

ip

An extension of a patent's expiration date to compensate for delays caused by regulatory review, commonly applied to pharmaceutical patents.

Patent Trial and Appeal Board

ip

An adjudicative body within the USPTO that conducts inter partes reviews, post-grant reviews, and appeals from patent examiner rejections.

Patent Troll

ip

A pejorative term for an entity that acquires patents primarily to assert them against operating companies rather than to practice the patented technology.

Paternity Disestablishment

family law

A legal action by a man previously adjudicated the father of a child to set aside that finding, typically based on later genetic evidence and subject to strict time limits and best-interests considerations.

Paternity Establishment

family law

The legal process of determining the father of a child born outside of marriage, accomplished by voluntary acknowledgment, genetic testing, or court adjudication.

Patient Rights

healthcare

Legal rights of patients including informed consent, privacy, access to medical records, and the right to refuse treatment.

Pay-to-Play

business

A provision penalizing investors who fail to participate pro rata in future financing rounds, typically by converting their preferred stock into common or shadow preferred.

Payable-on-Death Account

estate planning

A bank account designation naming a beneficiary to receive the funds automatically at the account holder's death, bypassing probate.

Payroll Tax

employment

Taxes withheld from employee wages and paid by employers to fund Social Security, Medicare, and unemployment insurance programs.

Penalty Clause

contract law

A liquidated damages provision unenforceable because the stipulated amount bears no reasonable relationship to anticipated harm and serves to punish breach.

Pension

employment

A retirement plan funded by employer contributions that provides a defined monthly benefit to eligible employees upon retirement.

Per Capita

estate planning

A distribution method in which all surviving descendants of the same generation share equally, regardless of family line, contrasting with per stirpes representation.

Per Curiam

courts

Latin for 'by the court.' A judicial opinion issued by the court as a whole rather than authored by a single judge.

Related:opinioncourt

Per Stirpes

estate

A method of distributing an estate where each branch of a family receives an equal share, regardless of the number of members in each branch.

Per Stirpes

estate planning

A method of distributing an estate by representation, in which a deceased beneficiary's share passes equally to that beneficiary's own descendants, preserving the share for the family branch.

Percentage of Income Model

family law

A child-support calculation that applies a flat or sliding percentage to the obligor's income, used in states such as Wisconsin, without explicitly accounting for the custodial parent's income.

Peremptory Challenge

civil procedure

The right of an attorney to reject a prospective juror without stating a reason, limited in number and cannot be based on race or gender.

Peremptory Challenge

criminal procedure

A party's right to remove a prospective juror without stating a reason, subject to constitutional limits against discriminatory use.

Perjury

criminal

The crime of willfully making a false statement under oath in a judicial or official proceeding.

PERM

immigration

The Program Electronic Review Management system used by the Department of Labor to process labor certification applications for employment-based immigration.

Permanent Alimony

family law

Support of indefinite duration awarded after long-term marriages when the recipient is unlikely to become self-supporting, now disfavored or abolished in several states.

Permanent Bar

immigration

An inadmissibility ground under INA section 212(a)(9)(C) triggered by reentry or attempted reentry after one year of unlawful presence or after a prior removal, with very limited waivers available only after ten years abroad.

Permissive Joinder

civil procedure

Optional joinder under Rule 20 of parties whose claims arise from the same transaction or occurrence and share a common question of law or fact.

Personal Jurisdiction

courts

A court's authority over the parties in a lawsuit, based on their presence, domicile, consent, or minimum contacts with the forum state.

Personal Jurisdiction

civil procedure

The court's authority over the parties before it, requiring constitutionally sufficient contacts with the forum state and adequate notice.

Personal Representative

estate planning

The gender-neutral and modern term encompassing both executors and administrators, the fiduciary responsible for collecting and distributing the decedent's estate.

Petit Jury

courts

A trial jury, typically consisting of 6 to 12 members, that hears evidence and renders a verdict in a case.

Pharmacy Benefit Manager

healthcare

A third-party entity that administers prescription drug programs on behalf of health insurers, negotiating with drug manufacturers and pharmacies.

Phase I Environmental Site Assessment

environmental

An investigation of a property's environmental condition, typically conducted during real estate transactions, to identify potential or existing contamination.

Phase II Environmental Site Assessment

environmental

A follow-up investigation involving sampling and laboratory analysis to confirm the presence or absence of contamination identified during a Phase I assessment.

Piercing the Corporate Veil

business

An equitable doctrine permitting courts to disregard the corporate or LLC form and hold owners personally liable when the entity is used to perpetrate fraud, is undercapitalized, or fails to observe corporate formalities. It is a fact-intensive, multifactor inquiry that is rarely granted.

Pinkerton Liability

criminal procedure

A doctrine making each co-conspirator liable for foreseeable substantive offenses committed by other co-conspirators in furtherance of the conspiracy.

Plain Error

civil procedure

A clear or obvious error affecting substantial rights, reviewable on appeal even without objection below, particularly in criminal cases under FRCrP 52(b).

Plain Feel Doctrine

criminal procedure

An extension of plain view allowing seizure of contraband detected by touch during a lawful Terry frisk when its identity is immediately apparent.

Plain View Doctrine

criminal procedure

An exception permitting warrantless seizure of evidence in plain view, provided the officer is lawfully present and the incriminating nature is immediately apparent.

Plaintiff

civil procedure

The party who initiates a civil lawsuit by filing a complaint against the defendant.

Plan of Reorganization

bankruptcy

A document filed in Chapter 11 describing how the debtor proposes to treat each class of claims and interests and how the debtor will operate going forward.

Plea

criminal

A defendant's formal response to criminal charges — typically guilty, not guilty, or no contest (nolo contendere).

Plea

criminal procedure

The defendant's formal response to criminal charges, typically guilty, not guilty, or nolo contendere, entered at arraignment.

Plea Bargain

criminal

An agreement between the prosecution and defendant where the defendant pleads guilty to a lesser charge or receives a lighter sentence in exchange for cooperation.

Related:pleasentence

Plea Bargain

criminal procedure

A negotiated agreement between prosecution and defense, typically involving a guilty plea in exchange for reduced charges or sentencing recommendations.

Plea Colloquy

criminal procedure

The on-the-record exchange between judge and defendant ensuring that a guilty plea is knowing, voluntary, and supported by a factual basis.

Pleading

civil procedure

A formal written document filed with the court that sets forth the claims or defenses of a party in a lawsuit.

Plenary Power

tribal

The broad authority of Congress over Indian affairs, derived from the Indian Commerce Clause and treaty-making power, subject to trust obligations.

Poison Pill

business

A defensive measure (formally a shareholder rights plan) that allows existing shareholders other than the acquirer to purchase additional shares at a discount upon a hostile bidder crossing a threshold, diluting the acquirer.

Polaroid Factors

intellectual property

Eight factors used in the Second Circuit to evaluate likelihood of confusion: strength of the mark, similarity, proximity of products, bridging the gap, actual confusion, defendant's good faith, quality, and consumer sophistication.

Ponzi Scheme

securities

A fraudulent investment scheme in which returns to earlier investors are paid using capital from newer investors rather than from legitimate business profits.

Portability

tax

The election by a surviving spouse to use the deceased spouse's unused estate tax exemption (DSUE) in addition to the surviving spouse's own exemption, requiring a timely-filed Form 706.

Post-Conviction Relief

criminal procedure

Statutory or constitutional procedures, beyond direct appeal, by which a convicted person may challenge their conviction or sentence.

Post-Grant Review

ip

A proceeding before the PTAB to challenge a patent's validity on any ground within nine months of the patent's issuance.

Postnuptial Agreement

family law

A contract entered into by spouses after marriage that defines property rights, support, and other terms in case of divorce or death, subject to heightened scrutiny because of the existing fiduciary relationship.

Potentially Responsible Party

environmental

Any individual or entity that may be liable for contamination at a Superfund site, including past and present owners, operators, generators, and transporters.

Pour-Over Will

estate planning

A will that directs probate assets to be transferred to a previously established trust, which then administers them under the trust terms.

Power of Attorney

estate

A legal document authorizing one person (the agent or attorney-in-fact) to act on behalf of another (the principal) in financial, legal, or medical matters.

Pre-existing Duty Rule

contract law

The common-law rule that a promise to do what one is already legally obligated to do is not consideration sufficient to support a contract modification.

Precedent

general

A court decision that establishes a rule or principle to be followed in future cases with similar facts or issues. The foundation of the common law system.

Predeceased

estate planning

Having died before another person, particularly a testator or intestate decedent, which often triggers anti-lapse statutes or per stirpes representation rules.

Predominance

civil procedure

The Rule 23(b)(3) requirement that common questions of law or fact predominate over individualized questions, a key hurdle in damages class actions.

Preemptive Rights

business

Shareholder rights to maintain proportional ownership by purchasing a pro rata share of new equity issuances before they are offered to third parties.

Preference

bankruptcy

A payment or transfer made to a creditor within 90 days before bankruptcy filing (or one year for insiders) that gives that creditor more than it would have received in a Chapter 7 liquidation.

Preferred Return

business

A specified rate of return that must be paid to certain investors (often preferred equity holders) before any distributions to common holders or carry-eligible participants.

Pregnancy Discrimination Act

employment

A federal law amending Title VII to prohibit employment discrimination on the basis of pregnancy, childbirth, or related medical conditions.

Preliminary Hearing

criminal

A proceeding held to determine whether there is enough evidence (probable cause) to proceed with a criminal trial.

Preliminary Hearing

criminal procedure

A pretrial proceeding where a magistrate determines whether sufficient evidence exists to hold the defendant for trial on the charges.

Premarital Agreement

family law

A contract entered into before marriage that allocates property rights, support obligations, and other matters in the event of divorce or death, governed in most states by the Uniform Premarital Agreement Act.

Premium Tax Credit

tax

A refundable credit under IRC Section 36B helping eligible taxpayers afford health insurance purchased through the ACA marketplace, with eligibility tied to household income.

Preponderance of the Evidence

evidence

The standard of proof in most civil cases, requiring the plaintiff to show that their version of events is more likely true than not.

Present-Sense Impression

evidence

A hearsay exception under FRE 803(1) for statements describing or explaining an event made while or immediately after perceiving it.

Presentment

criminal procedure

A historical document by which a grand jury, on its own initiative, accuses someone of an offense; rarely used in modern federal practice.

Preservation Duty

civil procedure

The obligation to preserve potentially relevant evidence when litigation is reasonably anticipated, the breach of which can trigger spoliation sanctions.

Presumption of Innocence

criminal

The fundamental principle that a person accused of a crime is considered innocent until proven guilty beyond a reasonable doubt.

Presumptions

evidence

Procedural devices requiring the factfinder to assume a fact from proof of another fact, shifting burdens of production or persuasion.

Pretermitted Heir

estate

A child born after the execution of a will who is unintentionally omitted. Most states provide such children with a share of the estate.

Pretrial Agreement

military

A plea agreement in the military justice system between the accused and the convening authority, typically involving a guilty plea in exchange for a cap on the sentence.

Prevailing Wage

employment

The wage rate established by law for workers on government-funded construction or service contracts, based on local wage surveys.

Prevention of Significant Deterioration

environmental

A Clean Air Act program requiring preconstruction review and permitting for new or modified major stationary sources in areas that meet air quality standards.

Priest-Penitent Privilege

evidence

A privilege shielding confidential communications made to clergy for spiritual guidance or confession, recognized in most jurisdictions.

Prima Facie

evidence

Latin for 'on its face.' Evidence sufficient to establish a fact or raise a presumption unless rebutted by contradictory evidence.

Primary Caretaker

family law

The parent who has historically performed the majority of day-to-day childrearing tasks such as feeding, bathing, medical care, and educational involvement, often given weight in custody determinations.

Principal Applicant

immigration

The person whose qualifications form the basis for an immigration petition and from whom derivative beneficiaries draw their eligibility.

Principal First Degree

criminal procedure

The person who actually commits the criminal act, either personally or through an innocent agent.

Principal Register

intellectual property

The primary trademark register of the USPTO providing full benefits of federal registration, including presumption of validity, constructive notice, and incontestability after five years.

Principal Second Degree

criminal procedure

A person who is present at the scene of the crime and aids, abets, or encourages its commission, sharing full criminal liability with the principal first degree.

Prior Art

ip

Any evidence that an invention is already known, including previous patents, publications, or public uses, used to evaluate novelty and nonobviousness.

Prior Art

intellectual property

All information publicly available before the effective filing date of a patent application that may be used to evaluate the novelty and non-obviousness of the claimed invention.

Prior Authorization

healthcare

A requirement that a healthcare provider obtain approval from a health plan before a specific service, procedure, or medication will be covered.

Prior Bad Acts

evidence

Evidence of a person's earlier wrongful conduct, generally inadmissible to show propensity but available for non-character purposes under FRE 404(b).

Prior Consistent Statement

evidence

A non-hearsay statement under FRE 801(d)(1)(B) admissible to rebut charges of recent fabrication or improper motive in current testimony.

Prior Inconsistent Statement

evidence

A non-hearsay statement under FRE 801(d)(1)(A) admissible substantively when given under oath at a prior proceeding and inconsistent with current testimony.

Priority Claim

bankruptcy

A claim that is entitled to be paid before general unsecured claims in a bankruptcy case, including certain taxes, wages, and domestic support obligations.

Priority Date

immigration

The date that establishes an immigrant's place in the visa queue, typically the date the labor certification application or immigrant petition was filed.

Priority Date

intellectual property

The earliest filing date to which a patent application may claim entitlement, used to measure prior art and resolve disputes between competing applications.

Private Law

general

Law governing relationships between private individuals and organizations, including contracts, torts, property, and family law.

Private Placement

securities

The sale of securities to a small number of select investors without a public offering, typically exempt from SEC registration under Regulation D.

Privilege

evidence

A legal right to refuse to disclose certain information, such as attorney-client communications, doctor-patient communications, or spousal communications.

Privity

contracts

A close and direct relationship between parties, such as parties to a contract, that allows one to enforce rights against the other.

Privity

civil procedure

A legal relationship sufficient to bind a non-party to a prior judgment for preclusion purposes, traditionally requiring identity of interests or representation.

Pro Bono

general

Legal services provided free of charge, typically to indigent clients or nonprofit organizations, as a professional obligation or public service.

Pro Se

civil procedure

Latin for 'for oneself.' Representing oneself in a legal proceeding without an attorney.

Probable Cause

criminal

A reasonable belief, based on facts and circumstances, that a crime has been committed or that evidence of a crime will be found. Required for arrests and search warrants.

Probable Cause

criminal procedure

A reasonable basis, supported by facts and circumstances, to believe that a crime has been committed or that evidence of a crime will be found in a particular place.

Probate

estate

The legal process of administering a deceased person's estate, including validating the will, paying debts, and distributing assets to beneficiaries.

Related:willexecutor

Probation

criminal

A sentence allowing a convicted person to remain in the community under supervision instead of serving time in prison, subject to conditions.

Probation

criminal procedure

A court-imposed sentence of supervision in the community in lieu of, or in addition to, incarceration, subject to specified conditions.

Probative Value

evidence

The degree to which a piece of evidence tends to prove or disprove a fact of consequence, weighed against potential prejudice under FRE 403.

Procedural Due Process

constitutional

The constitutional requirement that the government follow fair procedures before depriving a person of life, liberty, or property.

Procedural Unconscionability

contract law

Unfairness in the bargaining process, such as oppression, surprise, or lack of meaningful choice, often arising from disparities in bargaining power.

Process Server

civil procedure

A person, often a sheriff or licensed private individual, authorized to deliver legal process to defendants in compliance with applicable rules.

Product Liability

tort

The legal responsibility of manufacturers, distributors, and retailers for injuries caused by defective products.

Prohibition

civil procedure

An extraordinary writ from a superior court forbidding a lower court from exceeding its jurisdiction or acting outside its authority.

Promissory Estoppel

contracts

A legal doctrine preventing a party from reneging on a promise if another party relied on that promise to their detriment.

Promissory Estoppel

contract law

A doctrine under Restatement (Second) 90 enforcing a promise without consideration when the promisor reasonably expected and induced detrimental reliance.

Promissory Note

contracts

A written promise by one party to pay a specified sum of money to another party at a definite time or on demand.

Related:mortgagedebt

Proof of Claim

bankruptcy

A written statement filed by a creditor describing the reason the debtor owes the creditor money and the amount owed.

Propensity Evidence

evidence

Evidence offered to show a person acted in accordance with a character trait on a particular occasion, generally barred by FRE 404(a).

Property Tax

real estate

A tax levied by local governments on real property based on the assessed value of the land and improvements.

Proportionality

civil procedure

The 2015 amended Rule 26(b)(1) limit on discovery scope to matters proportional to the needs of the case, considering importance, amount in controversy, and burden.

Prosecution

criminal

The process of initiating and pursuing criminal charges against a defendant. Also refers to the government attorney (prosecutor) who brings the case.

Prosecution History Estoppel

ip

A doctrine that prevents a patent holder from recapturing through claim interpretation the scope of protection surrendered during the patent prosecution process.

Prosecution History Estoppel

intellectual property

A limitation on the doctrine of equivalents preventing the patentee from recapturing through equivalents any subject matter surrendered during prosecution to obtain the patent.

Prospectus

securities

A formal legal document filed with the SEC that provides details about an investment offering, including risks, financial data, and business operations.

Protected Health Information

healthcare

Individually identifiable health information held or transmitted by a covered entity or business associate, in any form or media.

Protective Order

family

A court order that protects a person from harm or harassment, often used in domestic violence cases. Also, an order limiting the disclosure of sensitive information during discovery.

Protective Order

civil procedure

A court order under Rule 26(c) limiting discovery to protect a party or person from annoyance, embarrassment, oppression, or undue burden or expense.

Protective Provisions

business

Negotiated contractual rights giving preferred holders veto power over specified corporate actions (such as new financings, M&A, or charter amendments) regardless of board approval.

Protective Sweep

criminal procedure

A quick, limited search of premises incident to arrest to check for persons who may pose a danger, authorized when officers have a reasonable belief of danger.

Provisional Application

intellectual property

A streamlined patent filing that establishes a priority date and allows use of 'patent pending,' but does not itself mature into a patent and expires 12 months after filing.

Provisional Patent Application

ip

A lower-cost patent filing that establishes an early filing date and allows the term 'patent pending,' but expires after 12 months unless a nonprovisional application is filed.

Proximate Cause

tort

The primary cause of an injury or harm that is legally sufficient to result in liability. The cause without which the injury would not have occurred.

Proximate Result

tort

The direct outcome of an action that was foreseeable and contributed to the harm or injury in question.

Proxy Solicitation

securities

The process of gathering shareholder votes, typically conducted before annual meetings, regulated by the SEC to ensure adequate disclosure.

Proxy Statement

securities

A document the SEC requires public companies to provide to shareholders before a shareholder meeting, containing information needed to make informed voting decisions.

Psychotherapist-Patient Privilege

evidence

A federal privilege recognized in Jaffee v. Redmond protecting confidential communications between patient and licensed mental-health professionals.

PTAB

intellectual property

The Patent Trial and Appeal Board, an administrative tribunal within the USPTO that conducts post-grant proceedings such as inter partes review and hears appeals from examiner rejections.

Public Authority Defense

criminal procedure

A defense that the defendant reasonably relied on the authority of a government official to engage in otherwise criminal conduct.

Public Charge

immigration

An inadmissibility ground based on the likelihood that a foreign national will become primarily dependent on government assistance for subsistence.

Public Charge

immigration

A ground of inadmissibility for noncitizens deemed likely at any time to become primarily dependent on the government for subsistence, assessed under a totality-of-the-circumstances test.

Public Defender

criminal

An attorney appointed by the court to represent defendants who cannot afford to hire a private attorney.

Public Domain

intellectual property

The status of works not protected by intellectual property rights (because the rights have expired, been forfeited, or never existed), making them freely usable by anyone.

Public Law

general

Law governing the relationship between individuals and the government, including constitutional law, criminal law, and administrative law.

Public Law 280

tribal

A federal statute transferring criminal jurisdiction over Indian country to certain state governments in specified states, without tribal consent.

Public Policy Void

contract law

A contract or provision unenforceable because it contravenes a clearly established public policy, even if not expressly prohibited by statute.

Public Records Exception

evidence

A hearsay exception under FRE 803(8) for records of public offices setting out their activities, observations, or factual findings from investigations.

Public Safety Exception

criminal procedure

A narrow exception allowing police to question a suspect without Miranda warnings when there is an immediate threat to public safety, as established in New York v. Quarles.

Pullman Abstention

civil procedure

The doctrine from Railroad Commission v. Pullman (1941) allowing federal courts to abstain when a state-law issue could resolve the case and avoid a federal constitutional question.

Punitive Damages

tort

Monetary damages awarded in addition to compensatory damages to punish the defendant for particularly egregious conduct and deter similar behavior.

Purposeful Availment

civil procedure

The requirement that a defendant deliberately direct activities at the forum state, invoking the benefits and protections of its laws, to support specific jurisdiction.

Putative Father Registry

family law

A state-maintained registry in which an unmarried man may record his claim of paternity to receive notice of adoption or termination proceedings concerning a child he may have fathered.

Q

QPRT

tax

Acronym for qualified personal residence trust, a specialized grantor trust under IRC Section 2702 that removes a personal residence from the grantor's estate at a discounted gift tax cost.

Qualified Business Income Deduction

tax

A deduction under Section 199A allowing eligible taxpayers to deduct up to 20 percent of qualified business income from a pass-through entity.

Qualified Business Income Deduction

tax

A 20% deduction from qualified business income of pass-through entities under IRC Section 199A, subject to taxable income thresholds and limitations for specified service trades.

Qualified Dividend

tax

Dividends from U.S. and qualifying foreign corporations that meet a holding period requirement and are taxed at preferential long-term capital gains rates rather than ordinary income rates.

Qualified Immunity

civil rights

A legal doctrine that protects government officials, including law enforcement officers, from civil liability for constitutional violations unless they violated 'clearly established' statutory or constitutional rights that a reasonable person would have known. Established in Harlow v. Fitzgerald (1982) and frequently debated in excessive force and civil rights cases.

Qualified Personal Residence Trust

tax

An irrevocable trust to which a grantor transfers a personal residence for a term of years, retaining the right to live there during the term, used to discount the gift's value.

Qualified Small Business Stock

business

Stock that meets the requirements of IRC Section 1202, allowing non-corporate holders to exclude up to 100% of gain (subject to caps) on sale after a five-year holding period.

Quantum Meruit

contracts

Latin for 'as much as deserved.' A legal claim allowing recovery for the reasonable value of services rendered when no contract exists.

Quantum Meruit

contract law

A quasi-contract measure of recovery equal to the reasonable value of services rendered, used when no enforceable contract exists.

Quantum Valebat

contract law

A quasi-contract measure of recovery equal to the reasonable value of goods delivered, the counterpart to quantum meruit for services.

Quasi-Contract

contracts

A legal obligation imposed by a court to prevent unjust enrichment when no formal contract exists between the parties.

Quasi-Contract

contract law

An obligation imposed by law to prevent unjust enrichment, also called implied-in-law contract, even where no genuine agreement exists.

Quid Pro Quo

employment

Latin for 'something for something.' In employment law, a type of sexual harassment where employment benefits are conditioned on sexual favors.

Quid Pro Quo Harassment

employment

A form of sexual harassment where employment decisions such as hiring, promotion, or continued employment are conditioned on the employee's submission to unwelcome sexual conduct.

Quiet Enjoyment

real estate

A tenant's right to use and enjoy leased premises without substantial interference from the landlord or third parties claiming superior title.

Quiet Title

real estate

A court action to establish ownership of real property and remove any adverse claims or clouds on the title.

Quitclaim Deed

property

A deed that transfers whatever interest the grantor has in property without any warranties about the quality of title.

Quitclaim Deed

real estate

A deed transferring whatever interest the grantor has in a property without making any warranties about the quality of the title.

Quorum

business

The minimum number of members required to be present at a meeting for business to be validly transacted.

R

Racketeering

criminal

Engaging in a pattern of criminal activity as part of an organized enterprise. Prosecuted under federal RICO statutes.

Rape Shield Rule FRE 412

evidence

A rule generally barring evidence of an alleged victim's other sexual behavior or predisposition in sexual-misconduct cases, subject to narrow exceptions.

Ratification

general

The formal approval of an agreement, amendment, or treaty. In contract law, the acceptance of a previously unauthorized act.

RCRA

environmental

The Resource Conservation and Recovery Act, the principal federal statute governing the generation, transportation, treatment, storage, and disposal of hazardous and solid waste.

Reaffirmation

bankruptcy

A voluntary agreement by a debtor to continue paying a dischargeable debt after bankruptcy, typically to retain collateral such as a car or home.

Reaffirmation Agreement

bankruptcy

A legally binding agreement in which a debtor voluntarily agrees to repay a debt that would otherwise be discharged, often to retain collateral.

Real Estate Professional

tax

A taxpayer who satisfies hours-of-service tests in real property trades or businesses, enabling rental real estate losses to be treated as non-passive and fully deductible.

Real Estate Specific Performance

contract law

The traditional rule that every parcel of land is unique, making specific performance the standard remedy for breach of a land sale contract.

Real Property

property

Land and anything permanently attached to it, including buildings, trees, and fixtures. Distinguished from personal property.

Reasonable Accommodation

employment

A modification or adjustment to a job, work environment, or employment process that enables a qualified individual with a disability to perform essential job functions.

Reasonable Doubt

criminal

The standard of proof in criminal cases; the level of certainty a juror must have to find a defendant guilty. Not merely possible doubt but doubt based on reason.

Reasonable Suspicion

criminal procedure

A lower standard than probable cause requiring specific, articulable facts suggesting criminal activity, sufficient to justify a brief investigatory stop.

Rebuttable Presumption

evidence

A presumption that the opposing party may overcome by producing sufficient contrary evidence, the most common form of presumption.

Recapture

tax

The requirement to treat previously deducted depreciation, amortization, or other deductions as ordinary income (or gain) upon disposition of the related property.

Recidivism

criminal

The tendency of a convicted criminal to reoffend after serving their sentence.

Recidivism

criminal procedure

The tendency of a convicted offender to reoffend, often a factor in sentencing enhancements and parole decisions.

Recidivist

criminal

A person who repeatedly commits crimes and returns to criminal behavior after being punished.

Recognizance

criminal

A bond or obligation recorded before a court whereby a person promises to appear in court or meet a specified condition.

Related:bailbond

Recorded Recollection

evidence

A hearsay exception under FRE 803(5) allowing reading of a record of a matter the witness once knew but now cannot recall sufficiently to testify.

Recording

real estate

The act of filing a deed, mortgage, or other document affecting title to real property with the county recorder's office to provide public notice of the interest.

Recoupment

civil procedure

A defendant's right to reduce the plaintiff's claim by the amount the plaintiff owes the defendant arising from the same transaction.

Recusal

courts

The act of a judge withdrawing from hearing a case due to a potential conflict of interest or appearance of bias.

Related:judgebias

Redaction

general

The process of editing or obscuring portions of a document to remove sensitive, privileged, or classified information.

Redemption Right

business

A contractual right of preferred stockholders to require the company to repurchase their shares at a specified price after a stated period, often used as a fallback exit mechanism.

Reexamination

ip

A USPTO proceeding to reconsider the validity of issued patent claims based on newly cited prior art.

Reformation

contracts

An equitable remedy correcting a written instrument (such as a contract or deed) to reflect the parties' true intentions.

Reformation

contract law

An equitable remedy that rewrites a written contract to reflect the parties' actual agreement when the writing fails to do so due to mutual mistake or fraud.

Refugee

immigration

A person located outside the United States who is unable or unwilling to return to their country of origin due to persecution or a well-founded fear of persecution on a protected ground.

Refugee Status

immigration

The protection granted to a person determined to be a refugee, allowing admission to the United States and providing a path to lawful permanent residence after one year.

Refundable Credit

tax

A tax credit that may produce a refund payable to the taxpayer even if it exceeds the tax otherwise due, including the EITC and the refundable portion of the child tax credit.

Regional Center

immigration

A USCIS-designated entity that pools EB-5 investor funds for investment in defined geographic areas, allowing investors to count indirect and induced jobs toward the job-creation requirement.

Registered Agent

business

An individual or entity designated to receive service of process and official correspondence on behalf of a corporation or LLC at a physical address in the state. Every formed or qualified entity must maintain one.

Registration Prerequisite

intellectual property

The rule under 17 U.S.C. Section 411 that copyright registration must be effected before filing a U.S. infringement suit, and timely registration is required to recover statutory damages and attorney's fees.

Registration Statement

securities

A document filed with the SEC that includes a prospectus and other information about the issuer and the securities being offered for public sale.

Regulation

administrative

A rule or order issued by a government agency that has the force of law, created through the administrative rulemaking process.

Regulation A

securities

An SEC regulation providing an exemption from registration for small securities offerings, allowing companies to raise up to $75 million in a 12-month period.

Regulation Best Interest

securities

An SEC rule requiring broker-dealers to act in the best interest of retail customers when making investment recommendations, exceeding the prior suitability standard.

Regulation D

securities

A set of SEC rules providing exemptions from registration requirements, allowing companies to raise capital through private placements without a full public offering.

Regulation FD

securities

An SEC rule requiring that when an issuer discloses material nonpublic information to certain individuals, it must make public disclosure of that information simultaneously.

Regulation S

securities

An SEC safe harbor provision defining when securities offerings are deemed to occur outside the United States and thus not subject to SEC registration.

Regulation SHO

securities

An SEC regulation governing short sale practices, including requirements for locating and delivering borrowed shares.

Rehabilitative Alimony

family law

Time-limited support designed to enable the recipient to obtain education or training necessary to become self-supporting.

Rejection

bankruptcy

The debtor's decision in bankruptcy to terminate an executory contract or unexpired lease, treating the breach as a prepetition claim.

Relevance

evidence

The fundamental evidentiary requirement that evidence have any tendency to make a fact of consequence more or less probable, codified in FRE 401.

Reliance

contracts

Dependence on another party's representations or promises, which may give rise to legal rights under estoppel or contract law.

Reliance Damages

contract law

Damages compensating the non-breaching party for expenses incurred in reliance on the contract, used when expectation damages are too speculative.

Relief from Judgment

civil procedure

The remedial process under Rule 60 for correcting clerical errors or obtaining relief from a final judgment for substantive reasons.

Relief from Stay

bankruptcy

A motion filed by a creditor asking the bankruptcy court to lift the automatic stay so the creditor may pursue its claim or foreclose on collateral.

Remainder

real estate

A future interest in real property that takes effect after the termination of a prior estate, such as a life estate.

Remainderman

estate planning

The person who holds the future interest in real property that becomes possessory when a preceding life estate ends.

Remand

civil procedure

When an appellate court sends a case back to a lower court for further proceedings consistent with the appellate court's decision.

Remediation

environmental

The process of cleaning up contaminated soil, groundwater, or other environmental media to protect human health and the environment.

Remedy

general

The means by which a court enforces a right or prevents or compensates for a wrong. Includes damages, injunctions, and specific performance.

Remittitur

civil procedure

A court order reducing a jury's damage award when the judge finds it excessive.

Related:damagestrial

Removal

civil procedure

The transfer of a case from state court to federal court by the defendant when federal jurisdiction exists. In immigration law, the deportation of a foreign national.

Removal Jurisdiction

civil procedure

The power of a defendant to remove a state-court action to federal court under 28 USC 1441 when the case could have been filed originally in federal court.

Removal Proceedings

immigration

The legal process before an immigration judge to determine whether a foreign national should be removed from the United States.

Removal Proceedings

immigration

Administrative proceedings before an immigration judge to determine whether a noncitizen should be ordered removed from the United States and whether any relief from removal is available.

Reorganization

bankruptcy

The process under Chapter 11 or Chapter 13 by which a debtor restructures its debts and business operations according to a court-approved plan.

Replevin

civil procedure

A legal action to recover personal property that has been wrongfully taken or detained.

Repossession

bankruptcy

The act of a creditor taking back property (usually personal property like a vehicle) from a debtor who has defaulted on payments.

Requests for Admission

civil procedure

Written requests under Rule 36 asking a party to admit the truth of specified facts or the genuineness of documents, narrowing issues for trial.

Requests for Production

civil procedure

Written requests under Rule 34 seeking documents, electronically stored information, or tangible things in the responding party's possession, custody, or control.

Res Judicata

civil procedure

Latin for 'a matter judged.' The principle that a final judgment on the merits bars the same parties from relitigating the same claim.

Res Judicata

civil procedure

The doctrine that a final judgment on the merits between the same parties precludes relitigation of the same claim, also called claim preclusion.

Rescission

contracts

The cancellation of a contract, restoring the parties to their positions before the contract was formed.

Rescission

contract law

The equitable remedy of unwinding a contract and restoring the parties to their pre-contract position, available for misrepresentation, mistake, duress, and other grounds.

Residence Venue

civil procedure

Venue based on the residence of the defendants under 28 USC 1391(b)(1), available when all defendants reside in the same state.

Residential Custody

family law

The arrangement designating where the child primarily lives, sometimes called physical custody, with the residential parent providing the primary home and day-to-day care.

Residual Hearsay Exception 807

evidence

A catchall hearsay exception under FRE 807 admitting trustworthy statements not covered by other exceptions when more probative than other reasonably available evidence.

Residuary Clause

estate planning

The provision in a will that disposes of all property not otherwise specifically devised or bequeathed, capturing assets that would otherwise pass by intestacy.

Respondeat Superior

tort

Latin for 'let the master answer.' The legal doctrine holding employers vicariously liable for the negligent acts of employees performed within the scope of employment.

Respondeat Superior

employment

A legal doctrine holding an employer liable for the wrongful acts of an employee committed within the scope of employment.

Restitution

criminal

The restoration of property or money to its rightful owner. In criminal law, a court-ordered payment by a convicted person to compensate the victim.

Restitution

criminal procedure

A court-ordered payment from a defendant to compensate victims for losses caused by the offense, often a mandatory component of sentencing.

Restitution Damages

contract law

Damages restoring to the non-breaching party any benefit conferred on the breaching party, measured by the value of that benefit.

Restoration of Competency

criminal procedure

The process of treatment, often involuntary medication, aimed at returning an incompetent defendant to a state capable of standing trial.

Restraining Order

family

A court order prohibiting a person from engaging in certain conduct, such as contacting or approaching another person. Can be temporary or permanent.

Restraint of Trade

contract law

A contractual restriction on competition that may be unenforceable under common law and antitrust principles unless reasonable in scope, duration, and geography.

Restricted Securities

securities

Securities acquired through unregistered private sales from the issuer or an affiliate that cannot be freely traded without compliance with SEC regulations.

Restricted Stock

business

Stock that is subject to vesting conditions and transfer restrictions, often issued to founders and employees, with unvested shares subject to repurchase if employment ends.

Retainer

general

A fee paid to an attorney in advance to secure their services. Also, the agreement establishing the attorney-client relationship.

Retaliation

employment

An adverse employment action taken against an employee for engaging in a protected activity, such as filing a discrimination complaint, reporting safety violations, or participating in an investigation.

Retraction of Repudiation

contract law

A repudiating party's withdrawal of repudiation before the other party has materially changed position or treated the repudiation as final, restoring obligations under UCC 2-611.

Return of Service

civil procedure

The sworn document filed by the process server attesting to the time, place, and manner of service, creating a presumption of proper service.

Reversal

civil procedure

An appellate court's decision to overturn or set aside a lower court's judgment.

Reverse Triangular

business

A triangular merger in which the acquirer's subsidiary merges into the target, with the target surviving as a wholly-owned subsidiary of the acquirer, often used to preserve target contracts.

Revlon Duties

business

Under Delaware law, the enhanced duty of directors to obtain the highest reasonably available price for shareholders once the sale of the company has become inevitable.

Revocation

estate planning

The act by which a testator cancels a will, accomplished by physical destruction, execution of a later inconsistent will, or operation of law such as divorce.

RICO

criminal

The Racketeer Influenced and Corrupt Organizations Act, a federal law providing extended penalties for criminal acts performed as part of an ongoing criminal enterprise.

Right of Survivorship

property

A feature of joint tenancy where, upon the death of one owner, the deceased's share automatically passes to the surviving owner(s) rather than through the estate.

Right of Way

property

The legal right to pass through property owned by another. Also, the right of a vehicle or pedestrian to proceed first in a traffic situation.

Right to Access

healthcare

A HIPAA right allowing individuals to inspect and obtain a copy of their protected health information maintained in a designated record set.

Right to Amend

healthcare

A HIPAA right allowing individuals to request that a covered entity amend their protected health information if they believe it is inaccurate or incomplete.

Right to Counsel

criminal procedure

The Sixth Amendment guarantee of assistance of counsel in criminal prosecutions, extended to indigent defendants in Gideon v. Wainwright.

Right-to-Work Law

employment

A state law prohibiting union security agreements that require employees to join or pay dues to a union as a condition of employment.

Riley v California

criminal procedure

A 2014 Supreme Court decision holding that police generally must obtain a warrant before searching the digital contents of a cell phone seized incident to arrest.

Riparian Rights

real estate

The rights of landowners whose property borders a natural watercourse to make reasonable use of the water.

Risk Analysis

healthcare

A required element of the HIPAA Security Rule in which a covered entity identifies and evaluates potential risks and vulnerabilities to the confidentiality of electronic protected health information.

Risk Management

healthcare

The HIPAA Security Rule requirement to implement security measures sufficient to reduce identified risks and vulnerabilities to a reasonable and appropriate level.

Robbery

criminal

The crime of taking property from a person by force, threat, or intimidation. Distinguished from larceny by the use or threat of force.

ROFO (Right of First Offer)

business

A contractual right requiring a seller to offer property to the holder first on specified terms before marketing it to third parties, but without matching third-party offers.

ROFR (Right of First Refusal)

business

A contractual right allowing the holder to purchase shares (or other property) on the same terms offered by a bona fide third-party buyer before the seller may transfer.

Rooker-Feldman Doctrine

civil procedure

The rule that federal district courts lack jurisdiction to review state-court judgments, leaving such review exclusively to the U.S. Supreme Court.

Royalty

ip

A payment made to a patent, copyright, or trademark owner in exchange for the right to use the intellectual property.

RSU (Restricted Stock Unit)

business

A contractual right to receive shares (or cash equivalent) upon vesting, with no actual stock issued until vesting and settlement, commonly used by public and late-stage private companies.

Rule 12(b)(1)

civil procedure

A motion to dismiss for lack of subject matter jurisdiction, which may be raised at any time and even by the court sua sponte.

Rule 12(b)(2)

civil procedure

A motion to dismiss for lack of personal jurisdiction, which is waived if not raised in the first responsive pleading or motion.

Rule 12(b)(3)

civil procedure

A motion to dismiss for improper venue, which must be raised in the first Rule 12 motion or it is waived.

Rule 12(b)(4)

civil procedure

A motion to dismiss for insufficient process, challenging the form of the summons rather than the manner of service.

Rule 12(b)(5)

civil procedure

A motion to dismiss for insufficient service of process, challenging how or to whom the summons and complaint were delivered.

Rule 12(b)(6)

civil procedure

A motion to dismiss for failure to state a claim upon which relief can be granted, testing the legal sufficiency of the complaint's allegations.

Rule 12(b)(7)

civil procedure

A motion to dismiss for failure to join a party required under Rule 19, often raised when an absent party's interests cannot be adequately protected.

Rule 12(c)

civil procedure

The federal rule allowing any party to move for judgment on the pleadings after the pleadings are closed, but early enough not to delay trial.

Rule 144

securities

An SEC rule providing a safe harbor for the resale of restricted and control securities if certain conditions are met, including holding period and volume limitations.

Rule 23 Requirements

civil procedure

The four prerequisites for class certification: numerosity, commonality, typicality, and adequacy, plus satisfaction of one of the categories in Rule 23(b).

Rule 29 Motion

criminal procedure

A motion under Federal Rule of Criminal Procedure 29 for judgment of acquittal, asserting that no rational juror could find guilt beyond a reasonable doubt.

Rule 35(b)

criminal procedure

A federal rule permitting sentence reduction after sentencing based on the defendant's post-sentencing substantial assistance to the government.

Rule 37 Sanctions

civil procedure

The federal sanctions regime for discovery abuse, including the 2015 Rule 37(e) provisions addressing failure to preserve ESI.

Rule 4 Service

civil procedure

The Federal Rule of Civil Procedure governing the form, content, and methods of service of the summons and complaint, with strict 90-day time limits.

Rule 50(a)

civil procedure

The federal rule permitting a party to move for judgment as a matter of law any time before submission of the case to the jury, after the opponent has been fully heard.

Rule 50(b)

civil procedure

The federal rule for renewed motion for judgment as a matter of law (formerly JNOV), filed within 28 days after entry of judgment.

Rule 56

civil procedure

The federal rule governing summary judgment, allowing partial or full disposition when the movant shows entitlement based on undisputed material facts.

Rule 59

civil procedure

The federal rule governing motions for new trial and motions to alter or amend judgments, which must be filed within 28 days of entry of judgment.

Rule 60(b)

civil procedure

The federal rule authorizing relief from final judgments for reasons including mistake, newly discovered evidence, fraud, voidness, or any other reason justifying relief.

Rulemaking

administrative

The process by which administrative agencies create regulations that have the force of law, typically through notice-and-comment procedures under the APA.

S

S Election

tax

A tax election under Subchapter S of the Internal Revenue Code allowing eligible corporations to be taxed as pass-through entities, avoiding double taxation.

S-Corp Election

business

An election under Subchapter S filed on Form 2553 allowing an eligible corporation or LLC to be taxed as a pass-through entity, avoiding entity-level corporate income tax.

S-Corp Eligibility

business

Statutory requirements for S-Corp status, including no more than 100 shareholders, only allowable shareholders (individuals, certain trusts, estates), one class of stock, and a domestic entity.

Safe Drinking Water Act

environmental

A federal law protecting public drinking water supplies by establishing standards for drinking water quality and regulating underground injection of contaminants.

Safe Harbor

intellectual property

A statutory protection limiting liability when prescribed conditions are met, such as the DMCA's safe harbor shielding online service providers from secondary copyright liability for user-posted content.

Safety Valve

criminal procedure

A statutory mechanism (18 U.S.C. 3553(f)) allowing certain nonviolent drug offenders to be sentenced below the mandatory minimum upon meeting eligibility criteria.

Sales Tax

tax

A consumption tax imposed by state and local governments on the sale of goods and certain services, collected by the seller at the point of sale.

SALT Cap

tax

The $10,000 ($5,000 MFS) limit on the itemized deduction for state and local taxes (income, sales, and property combined) imposed by the Tax Cuts and Jobs Act through 2025.

Sanction

courts

A penalty or punitive measure imposed by a court for violations of rules, orders, or standards of conduct.

Sarbanes-Oxley Act

securities

A 2002 federal law establishing enhanced financial disclosure requirements and corporate governance standards for public companies in response to accounting scandals.

Scienter

contract law

The mental element of fraud requiring knowledge of falsity or reckless disregard for the truth of the representation.

Sealed Indictment

criminal procedure

An indictment kept secret by court order, typically until the defendant is arrested, to prevent flight or destruction of evidence.

Search and Seizure

criminal

The examination of a person's property by law enforcement and the taking of evidence. The Fourth Amendment protects against unreasonable searches and seizures.

Search Incident to Arrest

criminal procedure

A warrantless search of an arrestee and the area within their immediate control, permitted to discover weapons or preserve evidence.

Search Warrant

criminal

A court order authorizing law enforcement to search a specific location for specific evidence of a crime, based on probable cause.

Search Warrant

criminal procedure

A judicial order, supported by probable cause and particularity, authorizing law enforcement to search a specified place for specified items.

SEC Rule 10b-5

securities

The principal antifraud provision under the Securities Exchange Act of 1934, prohibiting any act of fraud or deceit in connection with the purchase or sale of securities.

Second Amendment

constitutional

The constitutional amendment protecting the right of individuals to keep and bear arms.

Secondary Evidence

evidence

Evidence such as copies or oral testimony offered to prove the contents of a document, admissible only when the original is unavailable for proper reasons.

Secondary Meaning

intellectual property

Acquired distinctiveness in the minds of the consuming public associating a descriptive mark with a particular source, required for protection of non-inherently-distinctive marks.

Section 1031 Boot

tax

Money or non-like-kind property received in a Section 1031 exchange that triggers recognition of gain to the extent of the boot received.

Section 1031 Like-Kind Exchange

tax

A tax-deferred exchange of real property held for productive use in a trade or business or for investment for other like-kind real property, deferring recognition of gain under IRC Section 1031.

Section 1202

business

The Internal Revenue Code provision permitting exclusion of gain on the sale of qualified small business stock (QSBS) held more than five years, subject to a per-issuer cap.

Section 1244 Stock

business

Stock of a small domestic corporation that allows individual shareholders to treat losses on sale or worthlessness as ordinary (rather than capital) losses up to $50,000 ($100,000 joint).

Section 1245

tax

The Internal Revenue Code provision recapturing all prior depreciation as ordinary income on disposition of depreciable personal property and certain other tangible assets.

Section 1250

tax

The Internal Revenue Code provision recapturing depreciation as ordinary income on disposition of depreciable real property, with unrecaptured Section 1250 gain taxed at a maximum 25% rate.

Section 179

tax

An IRS provision allowing businesses to deduct the full purchase price of qualifying equipment and software in the year of purchase, rather than depreciating it over time.

Section 179 Expensing

tax

An election under IRC Section 179 to immediately deduct (rather than depreciate) the cost of qualifying tangible business property up to annual dollar limits, with phaseout based on total purchases.

Section 199A

tax

The Internal Revenue Code provision providing the qualified business income deduction of up to 20% for owners of pass-through entities, enacted by the Tax Cuts and Jobs Act of 2017.

Secured Creditor

bankruptcy

A creditor whose claim is secured by a lien on or security interest in the debtor's property, giving the creditor priority over unsecured creditors.

Secured Debt

bankruptcy

A debt backed by collateral (property) that the creditor can seize if the debtor defaults.

Securities Act

securities

The Securities Act of 1933, which requires registration of securities offerings and mandates disclosure of material information to investors.

Securities Fraud

securities

Any deceptive practice in connection with the sale or purchase of securities, including misrepresentation, market manipulation, and insider trading.

Security Safeguard

healthcare

Administrative, physical, and technical measures required under the HIPAA Security Rule to protect the confidentiality, integrity, and availability of electronic protected health information.

Self-Authenticating FRE 902

evidence

Categories of evidence, such as certified public records and trade inscriptions, that require no extrinsic authentication to be admitted.

Self-Determination

tribal

The federal policy promoting tribal control over programs and services previously administered by the Bureau of Indian Affairs, established by the Indian Self-Determination and Education Assistance Act.

Self-Employment Tax

tax

A tax consisting of Social Security and Medicare taxes paid by individuals who work for themselves, equivalent to both the employer and employee portions.

Self-Incrimination

constitutional

The act of providing testimony or evidence that exposes oneself to criminal prosecution. The Fifth Amendment protects against compelled self-incrimination.

Self-Proving Affidavit

estate planning

A sworn statement by the testator and witnesses, executed before a notary at the time the will is signed, that allows the will to be admitted to probate without live testimony from the witnesses.

Sentence

criminal

The punishment imposed by a court on a person convicted of a crime, which may include imprisonment, fines, probation, or community service.

Sentencing Guidelines

criminal procedure

A structured framework prescribing sentencing ranges based on offense severity and criminal history, advisory in federal court after Booker.

Separate Property

family law

Assets owned by a spouse before marriage, or acquired during marriage by gift or inheritance, which generally remain that spouse's individual property and are not divided at divorce.

Separation Period

family law

A statutorily required interval during which the spouses must live apart before a divorce may be granted, ranging from a few months to multiple years depending on jurisdiction and grounds.

Sequester Jury

criminal procedure

An order isolating jurors from outside contact during a trial or deliberations, used in high-profile cases to prevent prejudicial influence.

Sequester Witness

criminal procedure

An order excluding witnesses from the courtroom so they cannot hear other testimony, preserving the independence of their accounts.

Sequestration

civil procedure

The isolation of a jury from outside contact during deliberation, or the court-ordered seizure of property to preserve it during litigation.

Service by Publication

civil procedure

Service effected by publishing notice in a newspaper of general circulation, typically permitted only when the defendant's location is unknown despite diligent inquiry.

Service Mark

intellectual property

A mark used in commerce to identify and distinguish the source of services rather than goods, protected on the same basis as trademarks under the Lanham Act.

Service of Process

civil procedure

The formal delivery of legal documents (summons, complaint) to a defendant or party, notifying them of legal proceedings and establishing the court's jurisdiction.

Service of Process

civil procedure

The formal delivery of legal documents to provide a defendant with notice of the action and an opportunity to be heard, governed by Rule 4 in federal court.

Servicemembers Civil Relief Act

military

A federal law providing legal protections to active-duty military members, including reduced interest rates, stay of proceedings, and protection from default judgments.

Setback Requirement

real estate

A zoning regulation specifying the minimum distance a building must be from a property line, street, or other structure.

Setoff

civil procedure

A defendant's right to reduce the plaintiff's claim by an amount the plaintiff owes the defendant, arising from a different transaction.

Settlement

civil procedure

An agreement between parties to resolve a dispute without a full trial, often involving the payment of money in exchange for dismissal of claims.

Settlement Class

civil procedure

A class certified solely for purposes of approving a settlement, requiring the court to scrutinize cohesion and adequacy under Amchem v. Windsor.

Seventh Amendment

constitutional

The constitutional amendment preserving the right to a jury trial in civil cases where the amount in controversy exceeds twenty dollars.

Severance Agreement

employment

A contract between an employer and a departing employee providing compensation or benefits in exchange for a release of legal claims against the employer.

Sexual Harassment

employment

Unwelcome sexual advances, requests for sexual favors, or other verbal or physical conduct of a sexual nature that affects employment or creates a hostile work environment.

Shareholder

business

An owner of shares (stock) in a corporation, entitled to dividends and voting rights proportional to their ownership stake.

Shareholder Rights Plan

business

The formal name for a poison pill, a board-adopted plan that triggers issuance of rights to existing shareholders when an acquirer crosses an ownership threshold.

Shareholder Standing

civil procedure

The requirement that a derivative plaintiff have owned stock at the time of the challenged conduct and continue to own it throughout the litigation.

Short Selling

securities

The sale of a security that the seller does not own, borrowed from a broker, with the expectation that the price will decline so it can be repurchased at a lower price.

Short-Term Capital Gain

tax

Profit from the sale of an asset held for one year or less, taxed as ordinary income at the taxpayer's marginal rate.

Short-Term Capital Gain

tax

Gain on the sale of a capital asset held for one year or less, taxed at ordinary income rates rather than the preferential capital gains rates.

Signature Evidence

evidence

Other-acts evidence so distinctive in pattern and method that it functions as a signature identifying the defendant, admissible to prove identity.

Simplified Probate

estate planning

An umbrella term for any expedited probate process, often statutorily limited by estate value or family-only beneficiaries, which reduces cost and delay.

Simultaneous Death Act

estate planning

A uniform statute providing that when two people die under circumstances making it impossible to determine the order of death, each is treated as having predeceased the other for purposes of inheritance.

Sine Qua Non

general

Latin for 'without which not.' An essential condition or element without which something cannot exist or occur.

Single-Member LLC

business

An LLC with only one owner, treated by default as a disregarded entity for federal tax purposes (taxed on the owner's return) unless an election is made to be taxed as a corporation.

Sixth Amendment

constitutional

The constitutional amendment guaranteeing criminal defendants the right to a speedy and public trial, an impartial jury, notice of charges, confrontation of witnesses, and counsel.

Slander

tort

A form of defamation involving false spoken statements that harm a person's reputation. Distinguished from libel, which involves written statements.

Slayer Rule

estate

A legal principle preventing a person who intentionally kills another from inheriting from or benefiting from the victim's estate.

Slayer Rule

estate planning

An equitable and statutory rule barring a person who feloniously and intentionally kills the decedent from inheriting from the victim's estate or receiving life-insurance proceeds.

Small Business Debtor

bankruptcy

A Chapter 11 debtor with total noncontingent debts not exceeding a statutory threshold, subject to streamlined procedures and shorter deadlines.

Small Claims Court

courts

A court with simplified procedures and low filing fees that handles minor civil disputes, typically involving amounts below $5,000-$10,000.

Small Estate Affidavit

estate planning

A sworn statement permitted by state law that allows successors to collect property of a decedent without formal probate when estate value falls below a statutory threshold.

Sneak-and-Peek Warrant

criminal procedure

A warrant authorizing covert entry to observe and document evidence without seizure, with notice to the target delayed for a period set by the court.

Sole Physical Custody

family law

An arrangement where the child resides primarily with one parent, while the other parent may receive parenting time or visitation according to a schedule.

Sole Proprietorship

business

A business owned and operated by a single individual, with no legal separation between the owner and the business.

Solicitation

criminal procedure

The offense of inviting, requesting, or commanding another to commit a crime, complete upon the communication with the requisite intent.

Sound Mind

estate planning

A traditional phrasing of testamentary capacity, indicating that the testator possessed the requisite understanding at the time of executing the will.

Sovereign

constitutional

The supreme authority within a territory; in the U.S., sovereignty resides in the people and is exercised through federal and state governments.

Sovereign Immunity

constitutional

The legal doctrine that the government cannot be sued without its consent, derived from the principle that the sovereign is immune from legal action.

Special Court-Martial

military

An intermediate level of military court with jurisdiction over most UCMJ offenses, authorized to impose limited punishments including confinement and discharge.

Special Litigation Committee

civil procedure

A board-appointed committee of independent directors that investigates derivative claims and may move to dismiss them on behalf of the corporation.

Special Needs Doctrine

criminal procedure

An exception allowing warrantless searches when special governmental needs beyond ordinary law enforcement make the warrant or probable-cause requirement impracticable.

Specific Bequest

estate planning

A gift in a will of a particular identified item of personal property, such as a named piece of jewelry or a specific bank account.

Specific Intent

criminal procedure

A heightened mental state requiring the defendant to act with a particular purpose or goal beyond the act itself, such as intent to permanently deprive in larceny.

Specific Jurisdiction

civil procedure

Case-linked personal jurisdiction over a defendant for claims arising out of or related to its contacts with the forum state.

Specific Performance

contracts

An equitable remedy requiring a party to fulfill their contractual obligations, typically ordered when monetary damages are inadequate (e.g., unique property sales).

Specific Performance

contract law

An equitable remedy compelling actual performance of a contractual duty, available when damages are inadequate, such as for unique goods or real estate.

Specification

ip

The written description portion of a patent application that describes the invention in sufficient detail to enable a person skilled in the art to make and use it.

Speedy Trial Act

criminal procedure

A federal statute (18 U.S.C. 3161) imposing specific time limits on federal criminal prosecutions, generally requiring trial within 70 days of indictment.

Speedy Trial Right

criminal procedure

The Sixth Amendment guarantee that criminal defendants be tried without unreasonable delay, evaluated through balancing factors.

Spill Prevention Control

environmental

Regulations requiring facilities storing significant quantities of oil to prepare and implement plans to prevent oil spills into navigable waters.

Spoliation

evidence

The destruction, alteration, or failure to preserve evidence relevant to pending or reasonably foreseeable litigation, potentially warranting sanctions.

Spoliation Sanctions

civil procedure

Penalties for the destruction or failure to preserve evidence, which may include adverse inference instructions, evidentiary preclusion, or terminating sanctions.

Spousal Support

family

Financial payments made by one spouse to the other during or after a divorce to maintain their standard of living. Also called alimony or maintenance.

Spousal Support

family law

Court-ordered payments from one spouse to the other after separation or divorce, also called alimony or maintenance, designed to address economic disparity arising from the marriage.

Staff Judge Advocate

military

The senior legal adviser to a military commander, responsible for providing legal counsel on all matters affecting the command.

Staggered Board

business

A board structure in which directors are divided into classes (typically three) with only one class elected each year, making proxy contests slower and serving as a takeover defense.

Stakeholder

business

A person or entity with an interest in or affected by a course of action, transaction, or legal proceeding.

Standard Deduction

tax

A fixed dollar amount that reduces taxable income for taxpayers who do not itemize deductions, with the amount varying by filing status.

Standard Deduction

tax

A flat dollar amount that taxpayers may deduct from AGI in lieu of itemizing, varying by filing status and adjusted annually for inflation under IRC Section 63.

Standard of Care in Medicine

healthcare

The degree of care and skill that a reasonably competent healthcare provider in the same specialty would exercise under similar circumstances.

Standing

civil procedure

The legal requirement that a party bringing a lawsuit must have a sufficient connection to and harm from the issue, demonstrating a personal stake in the outcome.

Stare Decisis

general

Latin for 'to stand by things decided.' The legal principle obligating courts to follow precedent established by prior decisions on similar issues.

Stark Law

healthcare

A federal statute prohibiting physicians from referring patients for designated health services to entities with which the physician has a financial relationship, unless an exception applies.

State Implementation Plan

environmental

A plan developed by each state to implement the requirements of the Clean Air Act for attaining and maintaining the National Ambient Air Quality Standards.

Statement Against Interest

evidence

A hearsay exception under FRE 804(b)(3) for statements so contrary to the declarant's interest that a reasonable person would only make them if true.

Statement of Financial Affairs

bankruptcy

A document filed by the debtor in bankruptcy disclosing recent financial transactions, lawsuits, and other matters relevant to the case.

Statement of Use

intellectual property

The filing made after an intent-to-use application showing actual use of the mark in commerce, required (with specimens) before the mark can register.

Statute

general

A law enacted by a legislative body (Congress, state legislature, or local council).

Statute of Frauds

contracts

A legal principle requiring certain types of contracts to be in writing to be enforceable, including contracts for the sale of land and agreements lasting more than one year.

Statute of Frauds

contract law

The requirement, derived from a 1677 English statute and adopted in some form everywhere, that certain contracts be evidenced by a signed writing to be enforceable.

Statute of Limitations

civil procedure

A law prescribing the maximum time period within which a legal action must be filed. The period varies by type of claim and jurisdiction.

Statute of Limitations for Tax

tax

The time period during which the IRS can assess additional taxes or a taxpayer can claim a refund, generally three years from the filing date.

Statutory Damages

intellectual property

Damages of $750 to $30,000 per work (up to $150,000 for willful infringement) available under the Copyright Act in lieu of actual damages, requiring timely registration as a prerequisite.

Statutory Merger

business

A merger effected under state corporate law in which one corporation legally combines with another by filing a certificate of merger, automatically transferring assets and liabilities.

Statutory Share

estate planning

Another name for the elective share, representing the minimum portion of a deceased spouse's estate that a surviving spouse may claim by statute.

Stay

civil procedure

A court order suspending or halting legal proceedings or the enforcement of a judgment. In bankruptcy, the automatic stay stops creditor collection actions.

STEM OPT Extension

immigration

A 24-month extension of OPT available to F-1 graduates of qualifying science, technology, engineering, or mathematics programs employed by E-Verify employers under a formal training plan.

Stock Acquisition

business

A transaction in which a buyer purchases the stock of a target corporation, acquiring the entity with all its assets and liabilities by operation of law.

Stock Option

securities

A contractual right granted by a company to buy or sell its stock at a predetermined price within a specified period.

Stock Option

business

A contractual right to purchase stock at a fixed exercise price during a defined period, typically granted to employees as compensation and subject to vesting.

Stormwater Permit

environmental

A permit required under the Clean Water Act for discharges of stormwater from construction sites, industrial facilities, and municipal separate storm sewer systems.

Stream of Commerce

civil procedure

A theory under which placing goods into the flow of commerce with awareness they may reach the forum may support jurisdiction, debated since Asahi and J. McIntyre.

Strickland Test

criminal procedure

The two-prong standard from Strickland v. Washington for ineffective assistance: deficient performance and resulting prejudice affecting the outcome.

Strict Liability

tort

Legal responsibility for damages or injury without proof of negligence or intent. Applied in product liability cases and abnormally dangerous activities.

Strict Liability Crime

criminal procedure

An offense for which conviction requires no proof of mens rea, only that the defendant committed the prohibited act. Common examples include statutory rape and certain regulatory offenses.

Strike Price

business

The fixed price at which an option holder may purchase the underlying stock upon exercise, generally set at fair market value on the grant date to avoid 409A issues.

Subchapter C

business

The portion of the Internal Revenue Code (Sections 301-385) governing the taxation of corporations and their shareholders, including entity-level tax and dividend treatment.

Subchapter K

business

The portion of the Internal Revenue Code (Sections 701-777) governing the taxation of partnerships and LLCs taxed as partnerships, providing for pass-through taxation and complex allocation rules.

Subchapter V

bankruptcy

A streamlined reorganization process under Chapter 11 for small business debtors, introduced by the Small Business Reorganization Act of 2019.

Subordination

property

An agreement placing one creditor's claim or lien behind another's in priority.

Related:lienmortgage

Subpoena

civil procedure

A court order requiring a person to appear as a witness or produce documents. A subpoena duces tecum specifically requires the production of documents.

Subrogation

general

The substitution of one party for another regarding a legal claim or right, allowing the substituting party to pursue the claim.

Subsidiary

business

A company controlled (typically owned more than 50%) by another company, the parent, often used to isolate liabilities or operate in specific jurisdictions.

Substantial Assistance

criminal procedure

Cooperation with prosecutors providing material help in investigating or prosecuting others, potentially warranting a downward departure under 5K1.1.

Substantial Evidence

civil procedure

The deferential standard of review for agency factual findings, requiring such relevant evidence as a reasonable mind might accept as adequate to support a conclusion.

Substantive Due Process

constitutional

The constitutional doctrine protecting fundamental rights from government interference, regardless of the procedures used.

Substantive Law

general

Law that defines rights, duties, and obligations, as distinguished from procedural law, which governs the process of enforcing those rights.

Substantive Unconscionability

contract law

Unfairness in the terms themselves, such as harsh, oppressive, or one-sided provisions that no reasonable person would agree to.

Substituted Service

civil procedure

Service made on a person other than the defendant personally, such as a co-resident of suitable age at the defendant's dwelling under Rule 4(e)(2)(B).

Successor

general

A person or entity that takes over the rights, obligations, or property of another, such as a corporate successor or heir.

Suggestive Mark

intellectual property

A mark that suggests rather than describes a quality of the goods, requiring some imagination to make the connection, and is inherently distinctive and protectable without secondary meaning.

Suitability

securities

A FINRA rule requiring broker-dealers to have a reasonable basis for believing that a recommended transaction or investment strategy is suitable for the customer.

Summary Administration

estate planning

A streamlined probate procedure for small estates or estates with simple structures, requiring less judicial supervision and often available without formal letters.

Summary Court-Martial

military

The lowest level of military court, consisting of one commissioned officer, with jurisdiction over minor offenses and limited sentencing authority.

Summary Dissolution

family law

An expedited divorce procedure available in some states for short marriages with minimal assets, no children, and a written agreement, typically requiring less paperwork and no hearing.

Summary Judgment

civil procedure

A court decision made without a full trial when the judge determines there is no genuine dispute of material fact and one party is entitled to judgment as a matter of law.

Related:motiontrial

Summary Judgment Standard

civil procedure

The Celotex/Anderson/Matsushita trilogy framework requiring the movant to show no genuine dispute exists, viewing evidence in the light most favorable to the nonmovant.

Summons

civil procedure

A notice served on a defendant informing them that a lawsuit has been filed and requiring them to appear in court or respond within a specified time.

Superfund

environmental

The federal program established by CERCLA to identify, investigate, and clean up hazardous waste sites across the United States.

Superiority

civil procedure

The Rule 23(b)(3) requirement that a class action be superior to other available methods for fairly and efficiently adjudicating the controversy.

Supermajority Voting

business

A charter or bylaw provision requiring more than a simple majority (often two-thirds or 80%) for specified actions such as mergers, charter amendments, or director removal.

Supersedeas Appeal

civil procedure

An appeal accompanied by a supersedeas bond that suspends enforcement of the judgment below until the appellate court rules.

Supersedeas Bond

civil procedure

A bond posted by the appellant to stay (delay) the execution of a judgment during the appeal process.

Related:appealbond

Supersedeas Bond

civil procedure

A bond posted by the losing party to stay execution of a money judgment pending appeal, typically equal to the judgment plus interest and costs.

Superseding Indictment

criminal procedure

A subsequent indictment that replaces an earlier one, often to add charges, defendants, or correct deficiencies in the original.

Supervised Release

criminal procedure

A period of post-imprisonment supervision in the federal system, distinct from parole and imposed as part of the original sentence.

Supervised Visitation

family law

Parenting time that must occur in the presence of a designated third party or at a supervised visitation center, typically ordered when there are safety concerns such as abuse, substance use, or abduction risk.

Supplemental Jurisdiction

civil procedure

Federal jurisdiction under 28 USC 1367 over additional claims that form part of the same case or controversy as a claim within the court's original jurisdiction.

Supplemental Register

ip

A secondary trademark register at the USPTO for marks that are not inherently distinctive but may acquire distinctiveness through use over time.

Supplemental Register

intellectual property

A USPTO register for marks that are not yet distinctive enough for the Principal Register but are capable of becoming so, providing limited benefits such as use of the registration symbol.

Suppression Hearing

criminal procedure

A pretrial proceeding to determine whether evidence challenged under the exclusionary rule will be admitted at trial.

Supremacy Clause

constitutional

Article VI of the Constitution establishing that federal law is the supreme law of the land and takes precedence over conflicting state laws.

Supreme Court

courts

The highest court in the United States (and in most state judicial systems), serving as the final arbiter of constitutional and federal legal questions.

Surety

contracts

A person or entity that assumes responsibility for the debt, obligation, or performance of another party. A surety bond guarantees performance.

Survey

real estate

A professional measurement and mapping of a parcel of real property to determine its boundaries, area, and features.

Surviving Spouse Exemption

estate planning

A statutory entitlement allowing the surviving spouse to take certain household goods, vehicles, or a specified value of personal property free of creditor claims and ahead of other beneficiaries.

Sustain

courts

When a judge agrees with an objection during trial, preventing the challenged evidence or question from being presented.

T

T Visa

immigration

A nonimmigrant visa for victims of severe forms of human trafficking, providing temporary immigration status and eligibility for federal and state benefits.

T Visa

immigration

A non-immigrant visa for victims of severe forms of human trafficking who are physically present in the United States on account of trafficking and cooperate with reasonable law-enforcement requests.

Tag-Along Right

business

A contractual right allowing minority shareholders to participate (sell their pro rata share) in a sale by majority shareholders on the same terms, protecting against being left behind.

Tarnishment

intellectual property

A form of trademark dilution in which the famous mark's reputation is harmed by association with inferior, offensive, or unsavory goods or services.

Tax Credit

tax

A dollar-for-dollar reduction in the amount of tax owed, more valuable than a deduction because it directly reduces the tax liability rather than taxable income.

Tax Credit

tax

A dollar-for-dollar reduction in tax liability (more valuable than an equivalent deduction), available either as refundable or non-refundable depending on the credit.

Tax Deduction

tax

An expense that can be subtracted from gross income to reduce the amount of income subject to taxation.

Tax Evasion

tax

The illegal practice of deliberately underreporting income, overstating deductions, or hiding money to avoid paying taxes owed.

Tax Fraud

tax

An intentional wrongful act of filing false or misleading tax information with the intent to evade tax obligations, punishable by criminal penalties.

Tax Levy

tax

The legal seizure of a taxpayer's property to satisfy an unpaid tax debt, including wage garnishment and bank account levies.

Tax Lien

tax

A claim imposed by the government on property for unpaid taxes, giving the government priority over other creditors.

Related:lienirs

Tax Lien

tax

A legal claim by the government against a taxpayer's property for unpaid taxes, which attaches to all of the taxpayer's assets.

Related:tax levylien

Tax Shelter

tax

A legal strategy or financial arrangement designed to reduce or defer income tax liability, subject to IRS scrutiny if lacking economic substance.

Tax Treaty

tax

An agreement between two countries to avoid double taxation and prevent tax evasion, establishing rules for taxing cross-border income.

Tax-Exempt Organization

tax

An organization exempt from federal income tax under Section 501(c) of the Internal Revenue Code, including charitable, religious, educational, and social welfare organizations.

Taxable Income

tax

The portion of gross income subject to tax after all allowable deductions and exemptions have been subtracted.

Taxable Income

tax

AGI less the standard or itemized deduction and the QBI deduction, the amount to which the tax rate schedules are applied to compute regular income tax.

Temporary Protected Status

immigration

A humanitarian immigration status granted to nationals of designated countries experiencing armed conflict, natural disasters, or other extraordinary conditions.

Ten-Year Bar

immigration

An inadmissibility ground triggered when a noncitizen accrues one year or more of unlawful presence and departs the United States, barring readmission for ten years absent a waiver.

Tenancy at Sufferance

property

A situation where a tenant remains on the property after the lease has expired without the landlord's consent.

Tenancy at Will

property

A rental arrangement that either the landlord or tenant can terminate at any time with proper notice.

Tenancy by the Entirety

estate planning

A form of co-ownership available only to married couples in some states, featuring rights of survivorship and protection from creditors of only one spouse.

Tenancy in Common

property

A form of co-ownership where each owner holds a separate, divisible interest that can be freely transferred. No right of survivorship.

Tenancy in Common

estate planning

A form of co-ownership in which each owner holds a separate fractional interest with no right of survivorship, allowing each share to pass by will or intestacy at death.

Tenant

property

A person who rents or leases property from a landlord under a lease agreement.

Tender

contracts

An unconditional offer to perform an obligation, such as payment of a debt. Legal tender is currency that must be accepted for payment.

Related:offerpayment

Tender Offer

securities

A public proposal by a person or entity to purchase some or all of shareholders' shares at a specified price, usually at a premium above market value.

Tender Offer

business

A public offer made by an acquirer to purchase shares directly from target shareholders, typically at a premium to the market price and subject to SEC rules governing disclosure and procedure.

Terry Frisk

criminal procedure

A limited pat-down of a detained person's outer clothing for weapons, permitted when an officer reasonably suspects the person is armed and dangerous.

Terry Stop

criminal procedure

A brief investigatory detention based on reasonable suspicion of criminal activity, authorized by Terry v. Ohio.

Testamentary

estate

Relating to or provided for by a will. A testamentary trust is created by the terms of a deceased person's will.

Related:willtrust

Testamentary Capacity

estate planning

The mental ability required to make a valid will, generally meaning the testator understands the nature of the act, the extent of property, the natural objects of bounty, and the plan of distribution.

Testator

estate

A person who has made a valid will. The female form is testatrix.

Related:willprobate

Testimonial Statements

criminal procedure

Statements made with the primary purpose of creating a record for prosecution, such as formal police interrogations, which trigger Confrontation Clause protections.

Testimony

evidence

Statements made by a witness under oath in a legal proceeding, whether at trial, in a deposition, or before a grand jury.

Then-Existing State of Mind

evidence

A hearsay exception under FRE 803(3) for statements of the declarant's current mental, emotional, or physical condition.

Third Party

general

A person or entity not directly involved in a legal proceeding or transaction but who may be affected by or have an interest in the outcome.

Third-Party Beneficiary

contract law

A non-party to a contract whom the contracting parties intended to benefit and who may enforce the contract under Restatement 302.

Third-Party Complaint

civil procedure

A pleading by which a defending party brings in a non-party who may be liable to it for all or part of the plaintiff's claim, also called impleader under Rule 14.

Third-Party Visitation

family law

Court-ordered contact between a child and a non-parent such as a grandparent, stepparent, or sibling, available under state statutes with constitutional limits set by Troxel v. Granville.

Three-Strikes Law

criminal procedure

Sentencing statutes mandating substantially enhanced penalties, often life imprisonment, for defendants convicted of a third serious or violent felony.

Three-Year Bar

immigration

An inadmissibility ground triggered when a noncitizen accrues more than 180 days but less than one year of unlawful presence and departs the United States, barring readmission for three years.

Title

property

Legal ownership of property. Also, the document (deed) that serves as evidence of ownership.

Title Insurance

real estate

Insurance protecting the holder against financial loss from defects in the title to real property that were not discovered during the title search.

Title VII

employment

Title VII of the Civil Rights Act of 1964, prohibiting employment discrimination based on race, color, religion, sex, or national origin.

TN Visa

immigration

A nonimmigrant work visa available to Canadian and Mexican citizens under the United States-Mexico-Canada Agreement for prearranged business activities in certain professional occupations.

Tolling

civil procedure

The suspension or pausing of a statute of limitations period, effectively extending the time to file a legal action.

Tort

tort

A wrongful act (other than a breach of contract) that results in injury or harm to another person, giving rise to a civil cause of action for damages.

Tort Reform

tort

Legislative changes aimed at reducing the ability to bring tort lawsuits or limiting the amount of damages recoverable.

Tortfeasor

tort

A person who commits a tort (a wrongful act causing harm to another).

Total Maximum Daily Load

environmental

The maximum amount of a pollutant that a body of water can receive while still meeting water quality standards, established under the Clean Water Act.

Toxic Substances Control Act

environmental

A federal law giving EPA authority to require reporting, testing, and restrictions on chemical substances and mixtures.

TPR Proceeding

family law

A termination-of-parental-rights case, governed by strict statutory grounds and the heightened clear-and-convincing-evidence standard, that determines whether a parent's legal relationship with a child should be severed.

TPS (Temporary Protected Status)

immigration

A temporary immigration status granted by the Secretary of Homeland Security to nationals of designated countries experiencing armed conflict, environmental disaster, or other extraordinary conditions, providing protection from removal and work authorization.

Trade Dress

ip

The visual appearance of a product or its packaging that identifies and distinguishes the source of the product, protectable under trademark law when distinctive.

Trade Dress

intellectual property

The total image and overall appearance of a product or its packaging, protectable as a trademark if non-functional and distinctive (inherently or through secondary meaning).

Trade Secret

intellectual property

Confidential business information that provides a competitive advantage, such as formulas, processes, designs, or customer lists, protected by law from misappropriation.

Trade Secret Misappropriation

ip

The improper acquisition, disclosure, or use of confidential business information that derives economic value from not being generally known.

Trade Usage

contract law

A practice or method of dealing regularly observed in a particular trade so as to justify expectation of compliance under UCC 1-303(c).

Trademark

intellectual property

A word, phrase, symbol, design, or combination that identifies and distinguishes the source of goods or services from those of others.

Trademark

intellectual property

A word, name, symbol, design, or combination used to identify and distinguish the source of goods, protected under the Lanham Act and state law to prevent consumer confusion.

Trademark Abandonment

intellectual property

Loss of trademark rights through non-use with intent not to resume use (presumed after three years of non-use) or through acts causing the mark to lose its source-identifying significance.

Trademark Dilution

ip

The weakening of a famous trademark's distinctiveness through unauthorized use on unrelated goods or services, even without likelihood of confusion.

Trademark Infringement

intellectual property

Unauthorized use of a mark that is likely to cause consumer confusion as to source, sponsorship, or affiliation, actionable under the Lanham Act and state law.

Trademark Registration

ip

The process of registering a mark with the USPTO to obtain nationwide constructive notice, a legal presumption of ownership, and the right to use the registration symbol.

Transactional Immunity

criminal procedure

A grant of immunity barring prosecution for any offense related to the compelled testimony, the broadest form of immunity available.

Transactional Venue

civil procedure

Venue under 28 USC 1391(b)(2) in a district where a substantial part of the events or omissions giving rise to the claim occurred.

Transfer-on-Death

estate planning

A nonprobate designation allowing securities, vehicles, and in some states real estate to pass directly to a named beneficiary at the owner's death without probate administration.

Transferred Intent

criminal procedure

A doctrine that holds a defendant liable when they intend to harm one victim but accidentally injure another, treating the intent as transferred to the actual victim.

Transformative Use

intellectual property

A use that adds new expression, meaning, or message to the original work, weighing heavily in favor of fair use under the first factor as articulated in Campbell v. Acuff-Rose.

Transmutation

family law

The change in character of property from separate to marital (or vice versa) through the actions or agreement of the spouses, such as retitling a premarital asset jointly.

Treatment Payment Operations

healthcare

The three categories of activities for which a covered entity may use or disclose protected health information without obtaining patient authorization under HIPAA.

Treaty Rights

tribal

Rights guaranteed to Indian tribes by treaties with the United States, including hunting, fishing, and gathering rights that may extend beyond reservation boundaries.

Treble Damages

general

A statutory provision allowing courts to triple the amount of actual damages as a penalty, common in antitrust and RICO cases.

Trespass

tort

The unauthorized entry onto another person's property. Can be criminal (a misdemeanor) or civil (a tort actionable for damages).

Trial

civil procedure

A formal judicial proceeding in which evidence is presented to a judge or jury to determine the facts and reach a verdict.

Triangular Merger

business

A merger structure using a subsidiary of the acquirer as a party to the merger, allowing the acquirer itself to remain separate from the target's liabilities.

Tribal Consultation

tribal

The process by which federal agencies engage with tribal governments on a government-to-government basis regarding policies and actions that may affect tribal interests.

Tribal Court

tribal

A court established by a Native American tribe to adjudicate disputes and criminal matters within its jurisdiction, applying tribal law and custom.

Tribal Enrollment

tribal

The process by which a person is officially recognized as a member of an Indian tribe, determined by each tribe's own membership criteria.

Tribal Gaming

tribal

The operation of casinos and other gambling activities on Indian reservations, regulated under the Indian Gaming Regulatory Act of 1988.

Tribal Law and Order Act

tribal

A 2010 federal law enhancing tribal authority to prosecute and punish crimes in Indian country, expanding sentencing authority for tribal courts.

Tribal Sovereign Immunity

tribal

The legal doctrine that Indian tribes, as sovereign nations, cannot be sued without their consent, similar to the sovereign immunity of states and the federal government.

Tribal Sovereignty

tribal

The inherent authority of Indian tribes to govern themselves within the borders of the United States, recognized by the Constitution, treaties, statutes, and court decisions.

Tribal Water Rights

tribal

Legal rights of Indian tribes to water resources, often based on the Winters doctrine reserving water for tribal reservations to fulfill the purposes of the reservation.

Trust

estate

A legal arrangement in which one party (trustee) holds and manages property for the benefit of another party (beneficiary), according to the terms set by the creator (grantor).

Trust Responsibility

tribal

The federal government's legal obligation to protect tribal lands, assets, resources, and treaty rights, arising from the historical relationship between the United States and Indian tribes.

Trustee

estate

A person or institution that holds and manages property or assets for the benefit of another, owing a fiduciary duty to act in the beneficiary's best interest.

Trustee's Avoiding Powers

bankruptcy

The statutory authority of a bankruptcy trustee to undo certain prepetition transfers, including preferences and fraudulent conveyances, for the benefit of all creditors.

TTAB

intellectual property

The Trademark Trial and Appeal Board, an administrative tribunal within the USPTO that hears opposition, cancellation, and ex parte appeal proceedings related to trademark registrations.

Twombly Plausibility

civil procedure

The pleading standard from Bell Atlantic v. Twombly (2007) requiring factual allegations sufficient to raise a right to relief above the speculative level.

Typicality

civil procedure

The Rule 23(a)(3) requirement that the claims of the named representatives be typical of the claims of the class members.

U

U Visa

immigration

A nonimmigrant visa for victims of certain crimes who have suffered substantial mental or physical abuse and are helpful to law enforcement in the investigation or prosecution of the crime.

U Visa

immigration

A non-immigrant visa for victims of qualifying crimes who have suffered substantial mental or physical abuse and assist law enforcement, capped at 10,000 principal grants per fiscal year.

U Visa Certification

immigration

The required law-enforcement certification, on Form I-918 Supplement B, confirming that the U-visa applicant was a victim of a qualifying crime and has been helpful to the investigation or prosecution.

Related:u visat visa

UCC 2-209

contract law

The Uniform Commercial Code provision allowing modification of a sale-of-goods contract without consideration, subject to good faith and any signed writing requirement.

UCCJEA

family law

The Uniform Child Custody Jurisdiction and Enforcement Act, adopted in nearly every state, which determines which state has jurisdiction to make initial and modification custody orders and provides mechanisms for enforcement across state lines.

UCMJ

military

The Uniform Code of Military Justice, the federal law that governs the military justice system and defines criminal offenses and procedures for members of the U.S. armed forces.

Ultra Vires

business

Latin for 'beyond the powers.' An act performed by a corporation or government body that exceeds its legal authority.

Unconscionability

contracts

A contract defense where the terms are so one-sided and unfair that no reasonable person would agree to them. Courts may refuse to enforce unconscionable contracts.

Unconscionability

contract law

A doctrine under UCC 2-302 and Restatement 208 allowing courts to refuse enforcement of contracts or terms so one-sided as to shock the conscience.

Uncontested Divorce

family law

A dissolution in which the spouses have reached agreement on all issues, allowing the court to enter a decree based on their written stipulation, often without a contested hearing.

Underground Storage Tank

environmental

A tank and any connected piping with at least 10 percent of their volume underground, regulated under RCRA to prevent releases of petroleum and hazardous substances.

Underwriter

securities

A financial intermediary, typically an investment bank, that helps a company issue and sell new securities to the public.

Undue Hardship

employment

A defense to the reasonable accommodation requirement under the ADA, where an employer demonstrates that the accommodation would impose significant difficulty or expense.

Undue Influence

contracts

Excessive pressure or manipulation exerted over a person, impairing their free will and inducing them to act in the influencer's favor, often in contracts or wills.

Undue Influence

contract law

Unfair persuasion of a party by one in a dominant or confidential relationship, taking advantage of vulnerability to induce a transaction.

Undue Influence

estate planning

The exertion of pressure on a testator that overcomes free will and results in a disposition reflecting the influencer's wishes rather than the testator's, voiding the affected provisions.

Unemployment Insurance

employment

A joint federal-state program providing temporary income to workers who have lost their jobs through no fault of their own while they search for new employment.

Unfair Labor Practice

employment

Conduct by an employer or union that violates the rights established under the National Labor Relations Act, subject to complaint before the NLRB.

Unfair Prejudice

evidence

The capacity of evidence to lure the factfinder into deciding on an improper basis, typically an emotional one, justifying exclusion under FRE 403.

Unified Credit

tax

The credit against gift and estate tax that effectively exempts transfers up to the lifetime exemption amount, integrated across lifetime gifts and the taxable estate.

Uniform Commercial Code

business

A comprehensive set of laws governing commercial transactions in the United States, including the sale of goods, negotiable instruments, and secured transactions.

Unilateral Mistake

contract law

An erroneous belief held by only one party, which generally does not allow rescission unless the other party knew or had reason to know of the mistake.

Unique Goods

contract law

Goods whose distinctive character makes substitution impossible, supporting specific performance under UCC 2-716(1) for the buyer.

Unjust Enrichment

contracts

A legal principle preventing one party from benefiting at another's expense without justification, giving rise to a claim for restitution.

Unjust Enrichment

contract law

The legal principle that one who has been unjustly enriched at another's expense must make restitution, the basis for quasi-contract recovery.

Unlawful Command Influence

military

Any action by a military authority that could improperly influence the outcome of a court-martial or other military justice proceeding, considered the mortal enemy of military justice.

Unlawful Presence

immigration

Time spent in the United States without authorization or after an authorized period of stay has expired, which may trigger bars to future admission.

Unocal Review

business

An intermediate standard of review applied to defensive measures taken by directors in response to a takeover threat, requiring a reasonable response proportionate to the threat.

Unsecured Creditor

bankruptcy

A creditor whose claim is not backed by collateral or a lien, ranking lower in priority than secured creditors in bankruptcy distributions.

Unsecured Debt

bankruptcy

Debt not backed by collateral, such as credit card debt and medical bills. In bankruptcy, unsecured creditors are paid after secured creditors.

USCIS

immigration

United States Citizenship and Immigration Services, the federal agency that administers the nation's lawful immigration system, processing visa petitions, naturalizations, and asylum applications.

USCIS

immigration

United States Citizenship and Immigration Services, the agency within the Department of Homeland Security responsible for adjudicating immigration benefits such as green cards, naturalization, and work authorization.

Related:eoirbia

Use Immunity

criminal procedure

A grant of immunity barring direct use of compelled testimony against the witness, but not prosecution based on independently obtained evidence.

Use Tax

tax

A tax imposed on the use, storage, or consumption of tangible personal property purchased from an out-of-state seller where no sales tax was collected.

Usury

general

The practice of charging an illegally high rate of interest on a loan, prohibited by state usury laws.

Utility Patent

ip

The most common type of patent, protecting new and useful processes, machines, articles of manufacture, or compositions of matter for 20 years from the filing date.

Utility Patent

intellectual property

The most common type of patent, protecting new and useful processes, machines, manufactures, or compositions of matter for 20 years from the earliest non-provisional filing date.

Utilization Review

healthcare

The process by which a health plan evaluates the medical necessity and appropriateness of healthcare services before, during, or after they are provided.

V

Vacate

civil procedure

To set aside or annul a court order, judgment, or conviction.

Vacatur

civil procedure

The setting aside of an arbitration award under 9 USC 10 on narrow grounds such as corruption, fraud, evident partiality, or manifest disregard of the law.

Vandalism

criminal

The willful destruction or defacement of another person's property. A criminal offense that may also give rise to civil liability.

Variance

property

In zoning law, an exception allowing a property owner to use land in a way not otherwise permitted by zoning regulations, based on undue hardship.

VAWA Self-Petition

immigration

An immigration benefit under the Violence Against Women Act allowing abused spouses, children, and parents of U.S. citizens or lawful permanent residents to petition for status without the abuser's knowledge or cooperation.

Related:u visat visa

Venire

civil procedure

The pool of potential jurors summoned to the courthouse from which a jury will be selected.

Venue

courts

The geographic location where a court with jurisdiction may hear a case. Proper venue is typically where the events occurred or where the defendant resides.

Venue Rules

civil procedure

Rules under 28 USC 1391 specifying which judicial district is a proper place to bring an action, based on residence, events, or fallback provisions.

Venue Transfer

civil procedure

The relocation of a trial from one geographic location to another, typically because of prejudice or convenience.

Related:venueforum

Verdict

civil procedure

The formal decision or finding of a judge or jury on the matters submitted during a trial.

Related:judgmentjury

Vest

general

To give an immediate, fixed right of present or future enjoyment. Vested rights cannot be taken away without due process.

Vested Remainder

estate planning

A future interest that is created in an ascertained person and is not subject to any condition precedent other than the natural termination of the prior estate.

Vesting Acceleration

business

Contractual provisions causing equity awards to vest earlier than scheduled upon specified triggers such as termination, change of control, or a combination (double-trigger).

Vesting of Beneficiary Rights

contract law

The point at which a third-party beneficiary's rights become enforceable and protected from modification or rescission by the original contracting parties.

Vesting Schedule

business

A timetable that determines when an employee, founder, or service provider earns the right to retain shares or options, commonly four years with a one-year cliff in startups.

Vicarious Admission

evidence

A non-hearsay statement under FRE 801(d)(2)(D) made by a party's agent or employee on a matter within the scope of the relationship.

Vicarious Infringement

intellectual property

Secondary copyright liability imposed on a defendant who has the right and ability to supervise infringing activity and a direct financial interest in it, regardless of knowledge.

Vicarious Liability

tort

A legal doctrine imposing liability on one party for the actions of another, such as an employer being liable for the negligent acts of an employee.

Victim

criminal

A person who has suffered harm, injury, or loss as the result of a crime or tort.

Victim Restitution

criminal procedure

Compensation ordered to be paid by the defendant directly to the victim for measurable losses such as medical expenses, lost income, and property damage.

Virtual Visitation

family law

Parent-child contact through video calls, messaging, or other electronic means, often included in parenting plans to supplement in-person time, especially across long distances.

Visa Bulletin

immigration

A monthly publication by the State Department indicating which priority dates are currently eligible for immigrant visa processing.

Visa Retrogression

immigration

A backward movement in visa bulletin priority dates caused by high demand relative to annual visa quotas, delaying the availability of immigrant visas.

Void

contracts

Having no legal force or effect; null. A void contract is one that was never valid from the beginning.

Void Judgment

civil procedure

A judgment that is legally a nullity from inception due to lack of subject matter or personal jurisdiction, or denial of due process, and may be attacked at any time.

Voidable

contracts

A contract or agreement that is valid but may be legally voided at the option of one party due to a defect such as fraud, duress, or incapacity.

Voidable Judgment

civil procedure

A judgment that is valid until successfully challenged, typically through a Rule 60(b) motion within the time limits, in contrast to a void judgment.

Voir Dire

civil procedure

The process of questioning prospective jurors to determine their suitability for serving on a jury, including identifying potential biases.

Voir Dire

criminal procedure

The process of questioning prospective jurors to identify bias and select an impartial jury, also used for examining the qualifications of expert witnesses.

Voluntary Acknowledgment

family law

A signed statement by an unmarried mother and the alleged father establishing paternity without litigation, which becomes a legal finding of paternity after a brief rescission period.

Voluntary Departure

immigration

An alternative to formal removal allowing a foreign national to leave the United States at their own expense within a specified period, avoiding a formal removal order.

Voluntary Departure

immigration

A form of relief allowing a noncitizen to leave the United States at their own expense within a specified period in lieu of receiving a removal order, preserving future eligibility for benefits.

Voluntary Manslaughter

criminal

The intentional killing of a person in the heat of passion or upon sudden provocation, without premeditation.

Voluntary Petition

bankruptcy

A bankruptcy case initiated by the debtor filing a petition with the bankruptcy court, along with schedules of assets, liabilities, income, and expenses.

Voluntary TPR

family law

A termination of parental rights initiated by the parent's own consent, typically in connection with a planned adoption and subject to statutory waiting and revocation periods.

W

W-2

tax

A form issued by employers reporting an employee's annual wages and the amount of taxes withheld from their paycheck.

Waiver

general

The voluntary and intentional relinquishment of a known right, claim, or privilege.

Waiver of Inadmissibility

immigration

A discretionary form of relief allowing certain inadmissible noncitizens to be admitted or adjust status, typically requiring a showing of extreme hardship to a qualifying U.S.-citizen or LPR relative.

Waiver of Service

civil procedure

A defendant's agreement under Rule 4(d) to waive formal service in exchange for additional time to respond and avoidance of process-server costs.

Ward

family

A person, especially a minor or incapacitated adult, who is under the protection of a court-appointed guardian.

Warrant

criminal

A court order authorizing law enforcement to take a specific action, such as arresting a person (arrest warrant) or searching a location (search warrant).

Warrant

securities

A financial instrument issued by a company that gives the holder the right, but not the obligation, to purchase the company's stock at a specific price before expiration.

Warranty

contracts

A guarantee or assurance about the quality, condition, or performance of a product or property. Can be express (stated) or implied (by law).

Warranty Deed

real estate

A deed in which the grantor guarantees that they hold clear title to the property and have the right to sell it, providing the highest level of buyer protection.

Waterfall Distribution

business

A tiered distribution structure that allocates cash flows among investors and sponsors in a specified order, often involving return of capital, preferred return, catch-up, and carried interest tiers.

Weighted Average

business

A common anti-dilution formula that adjusts the conversion price based on both the new issuance price and the number of shares issued relative to existing shares.

Wetlands

environmental

Areas saturated by surface or groundwater sufficient to support vegetation adapted for life in saturated soil conditions, protected under the Clean Water Act and other environmental laws.

Wharton's Rule

criminal procedure

A rule that an agreement by two persons to commit an offense that inherently requires two participants cannot be prosecuted as a conspiracy.

Whistleblower

employment

A person who reports illegal, unethical, or fraudulent activity within an organization, often protected from retaliation by federal and state laws.

Whistleblower Protection

employment

Federal and state laws protecting employees from retaliation for reporting illegal activity, fraud, safety violations, or other wrongdoing by their employer.

White Knight

business

A friendly acquirer sought by a target company facing a hostile takeover to provide a more favorable alternative transaction.

Wholly-Owned Subsidiary

business

A subsidiary in which the parent company owns 100% of the outstanding equity, allowing full consolidation for accounting and tax purposes.

Will

estate

A legal document expressing a person's wishes regarding the distribution of their property after death and the care of any minor children.

Will Contest

estate planning

A formal proceeding challenging the validity of a will on grounds such as lack of capacity, undue influence, fraud, or improper execution.

Willful Infringement

ip

Intentional infringement of a patent despite knowledge of the patent and its applicability, which can result in enhanced damages up to three times actual damages.

Willful Infringement

intellectual property

Copyright or trademark infringement committed with knowledge that the conduct constituted infringement or with reckless disregard for the rights holder, supporting enhanced damages.

Willful Patent Infringement

intellectual property

Patent infringement committed despite an objectively high likelihood that the actions constituted infringement, supporting enhanced damages up to three times the actual damages under 35 U.S.C. Section 284.

Williams Act

securities

A 1968 federal law amending the Securities Exchange Act to require disclosure of information relating to tender offers and large share acquisitions.

Withdrawal Defense

criminal procedure

An affirmative defense to conspiracy and similar offenses requiring the defendant to renounce the criminal purpose and take affirmative steps to defeat it.

Withholding

tax

The amount of federal, state, or local income tax that an employer deducts from an employee's wages and remits directly to the government.

Withholding of Removal

immigration

A mandatory form of protection prohibiting removal of a foreign national to a country where their life or freedom would be threatened on account of a protected ground.

Withholding of Removal

immigration

A mandatory form of protection barring removal to a country where the applicant's life or freedom would be threatened on a protected ground, with a higher burden of proof than asylum but without a path to permanent residence.

Witness

evidence

A person who testifies under oath in a legal proceeding, providing firsthand knowledge of facts relevant to the case.

Witnessed Will

estate planning

The standard form of will, signed by the testator in the presence of (typically) two disinterested witnesses who then sign attesting to the testator's signature and capacity.

Work for Hire

ip

A doctrine under copyright law in which the employer, rather than the employee, is considered the author and owner of a work created within the scope of employment.

Work for Hire

intellectual property

A work created by an employee within the scope of employment, or a specially commissioned work falling within one of nine statutory categories with a written agreement, in which the employer or commissioning party is the author and copyright owner.

Work Product Doctrine

evidence

A legal protection preventing discovery of materials prepared by or for an attorney in anticipation of litigation, including mental impressions, conclusions, and legal theories.

Work Product Doctrine

evidence

A protection for materials prepared by or for an attorney in anticipation of litigation, distinct from attorney-client privilege and codified in part by FRCP 26(b)(3).

Work Release

criminal procedure

A program allowing inmates to leave a correctional facility during the day for approved employment while returning to custody at night.

Workers Compensation

employment

A state-mandated insurance program providing benefits to employees who suffer work-related injuries or illnesses, regardless of fault.

Workers' Compensation

employment

A state-mandated insurance system providing benefits to employees who suffer work-related injuries or illnesses, regardless of fault.

Workforce Training

healthcare

A HIPAA administrative safeguard requiring covered entities to provide training to all workforce members on policies and procedures regarding the handling of protected health information.

Workplace Safety

employment

The policies, procedures, and practices designed to protect the health and safety of employees in the workplace, regulated primarily by OSHA.

Workstation Security

healthcare

A HIPAA Security Rule physical safeguard requiring covered entities to implement policies and procedures for the proper use of and access to workstations handling electronic protected health information.

Writ

courts

A formal written order issued by a court directing a person or entity to perform or refrain from performing a specific act.

Writ of Certiorari

civil procedure

The discretionary order by which the U.S. Supreme Court agrees to review a lower court decision, granted in a small fraction of petitions filed.

Writ of Execution

civil procedure

A court order directing a law enforcement officer to enforce a judgment, typically by seizing and selling the debtor's property.

Writ of Mandamus

civil procedure

A court order commanding a government official or body to perform a legally required duty.

Written Deposition

civil procedure

A deposition under Rule 31 in which questions are submitted in writing in advance and read to the witness by an officer, less commonly used than oral depositions.

Written Description

ip

A patent law requirement that the specification must convey to those skilled in the art that the inventor had possession of the claimed invention at the time of filing.

Wrongful Death

tort

A civil action brought by the survivors or estate of a person who died due to another party's negligent or intentional act.

Wrongful Termination

employment

The firing of an employee in violation of federal or state law, an employment contract, or public policy.

Wrongful Termination

employment

The discharge of an employee in violation of a contract, public policy, or anti-discrimination statute.

X

X-Ray Evidence

evidence

Radiographic images used as demonstrative evidence in legal proceedings to show injuries, medical conditions, or the presence of foreign objects.

Y

Yield

general

To give way or defer to another party's right or priority. In traffic law, the obligation to allow another vehicle or pedestrian to proceed first.

Related:right of way

Yield

securities

The income return on an investment, expressed as a percentage of the investment's cost, its current market value, or its face value.

Younger Abstention

civil procedure

The doctrine from Younger v. Harris (1971) requiring federal courts to abstain from enjoining ongoing state criminal proceedings absent extraordinary circumstances.

Z

Zoning

property

Government regulation dividing a municipality into districts and prescribing the types of land uses permitted in each district.

Zoning

real estate

Local government regulations controlling the use of land and buildings within designated districts, including residential, commercial, industrial, and agricultural zones.

Zoning Board

property

A local government body that hears applications for variances, special permits, and appeals related to zoning regulations.

Zoning Variance

real estate

Permission from a local zoning authority to use property in a way that deviates from the applicable zoning regulations, typically granted to avoid undue hardship.

Zubulake Duty

evidence

The obligation, articulated in Zubulake v. UBS Warburg, to preserve potentially relevant electronically stored information once litigation is reasonably anticipated.