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Summary Judgment Prosecution History Estoppel Patent Litigation

Sheppard Mullin Richter & Hampton LLP

The Push and Pull of Prosecution Estoppel: How Cancelled Claims Can Affect the Scope of Non-Amended Claims

Prosecution history estoppel may narrow the scope of a claim that was unamended during prosecution, if another closely related claim is amended or cancelled during prosecution....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

Jones Day

ABPA v. Ford: Design Patent Defenses Run Out of Gas on Appeal - A U.S. Court of Appeals for the Federal Circuit decision...

Jones Day on

On July 23, 2019, the U.S. Court of Appeals for the Federal Circuit released its decision affirming summary judgment that the asserted design patents were not invalid for non-ornamentality under 35 U.S.C. § 171, and rejecting...more

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