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Appeals Doctrine of Equivalents Medical Devices

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

McDonnell Boehnen Hulbert & Berghoff LLP

Colibri Heart Valve LLC v. Medtronic Corevalve, LLC (Fed. Cir. 2025)

The doctrine of equivalents (DOE), a creation of the Supreme Court in Graver Tank & Mfg. v. Linde Air Products (1950), is balanced by the concept of prosecution history estoppel (PHE), the contours of which were delineated...more

McDermott Will & Schulte

Look to Specification to Interpret Facially Unclear Claims

Addressing claim construction issues, the US Court of Appeals for the Federal Circuit reiterated the necessity of reading claims in the context of the written description when they are not clear on their face. Howmedica...more

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