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Disclaimers CAFC Patent Litigation

Dinsmore & Shohl LLP

Federal Circuit Reinforces Strict Application of Prosecution History Disclaimer

Dinsmore & Shohl LLP on

The United States Court of Appeals for the Federal Circuit has recently reinforced the consequences of prosecution history disclaimer. In Puradigm, LLC v. DBG Group Investments LLC, the court held that statements made during...more

Jenner & Block

The Federal Circuit Expands Disclaimer of Patent Scope During Prosecution

Jenner & Block on

The Federal Circuit Court of Appeals’ recent decision in Focus Products Group International, LLC v. Kartri Sales Co., Inc., No. 2023-1446 (Fed. Cir. Sept. 30, 2025) reversed summary judgment of infringement on two patents and...more

DLA Piper

What is a “Clear and Unmistakable” Prosecution History Disclaimer?

DLA Piper on

The Federal Circuit’s March 21, 2025 decision in Maquet Cardiovascular LLC v. Abiomed Inc. et al. (No. 2023-2045) and the recent Patent Trial and Appeal Board (PTAB) Delegated Rehearing Panel decision in SynAffix B.V. v....more

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