Phonometrics, Inc. v. Northern Telecom Inc., and United Telephone Company of Florida, and Sprint Corporation

How courts have described this case

Verbatim parenthetical descriptions written by other courts when citing this decision. Ranked by citation-network relevance.

• holding that Cardinal Chemical Co. v. Morton International, Inc., 508 U.S. 83, 113 S.Ct. 1967, 124 L.Ed.2d 1 (1993
• holding that it is not always necessary for a district court to resolve both the validity and infringement issues and noting that when “noninfringement is clear and invalidity is not plainly evident it is appropriate to treat only the infringement issue”
• recognizing a district court’s “discretion to dismiss a counterclaim alleging that a patent is invalid.. .where it finds no infringement”
• appellant failed to object when district court referred an issue to a special master, and thus was barred from raising any objection on appeal to the referral
• “Although an infringement analysis usually involves both issues of law and question of fact, summary judgment of noninfringement may still be proper.”
• “[A] district court has discretion to dismiss a counterclaim alleging that a patent is invalid as moot where it finds no infringement”

Source: CourtListener parenthetical corpus (CC0).