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Life Sciences Doctrine of Equivalents Appeals

Hudnell Law Group

Federal Circuit Rejects Formalistic Shield to Prosecution History Estoppel

Hudnell Law Group on

On July 18, 2025, the U.S. Court of Appeals for the Federal Circuit reversed a $106 million jury verdict in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC, No. 2023-2153, finding that Colibri’s infringement claim under...more

Troutman Pepper Locke

Federal Circuit Ruling Broadens Reach of Prosecution History Estoppel to Include Canceled Claims

Troutman Pepper Locke on

Prosecution history estoppel typically arises when a claim is rejected during prosecution and is then amended (narrowed) to overcome the rejection. However, in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC, No....more

Knobbe Martens

Doctrine of Equivalents under Enzo Biochem Inc. v. Applera Corp.

Knobbe Martens on

Before Prost, O’Malley, and Wallach. Appeal from the District of Connecticut (nonprecedential). On August 2, 2017, the Federal Circuit affirmed a decision by the U.S. District Court for the District of Connecticut granting...more

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