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Letter R
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Reexamination

A USPTO proceeding to reconsider the validity of issued patent claims based on newly cited prior art.

Encyclopedia entry: Reexamination

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reexamination

In patent law, reexamination is a proceeding that may be requested from the Patent and Trademark Office  to determine whether prior art  invalidates one or more claims  of a previously granted patent .

In trial procedure , reexamination is an alternative name for a redirect examination .

[Last reviewed in May of 2024 by the Wex Definitions Team
]

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Encyclopedia content from Cornell LII Wex (CC-BY-NC-SA 2.5).

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This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.