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Intellectual Property Protection Doctrine of Equivalents Prosecution History Estoppel

Cooley LLP

Federal Circuit Strengthens Prosecution History Estoppel Principles in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC

Cooley LLP on

On July 18, 2025, the US Court of Appeals for the Federal Circuit reversed a lower court ruling in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC, holding that prosecution history estoppel barred the patentees’ doctrine...more

McDonnell Boehnen Hulbert & Berghoff LLP

Supreme Court Denies Another Certiorari Petition on Doctrine of Equivalents

The Federal Circuit during 2019 and 2020 has issued a spate of decisions on the proper application of the Doctrine of Equivalents (see, e.g., UCB, Inc. v. Watson Laboratories Inc. and Galderma Laboratories, L.P. v. Amneal...more

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