News & Analysis as of

Prosecution History Estoppel Claim Construction Inter Partes Review (IPR) Proceeding

Proskauer - The Patent Playbook

Eyes Open to the Past: Federal Circuit Holds Prosecution History Is Claim Construction Evidence

The Federal Circuit’s decision in Eye Therapies, LLC v. Slayback Pharma, LLC provides further insight into the tools available for patent claim construction. The Federal Circuit had previously held that a patent’s...more

BCLP

Federal Circuit Clarifies Limits of Prosecution Disclaimer in Patent Families

BCLP on

In Maquet Cardiovascular LLC v. Abiomed Inc., 131 F.4th 1330 (Fed. Cir. 2025), the Federal Circuit addressed whether the prosecution history of one patent in a patent family can limit the scope of claims in a different patent...more

McDermott Will & Emery

The Clear and Unmistakable Standard for Applying Prosecution Disclaimer

The US Court of Appeals for the Federal Circuit found that a district court misconstrued claim terms based on a misapplication of the clear and unequivocal disavowal standard and vacated its noninfringement decision. Maquet...more

Knobbe Martens

Federal Circuit Review - June 2019

Knobbe Martens on

One-year Clock for Filing IPR Petition Applies to Litigants and Parties that Become Privies of the Litigant Prior to Institution. In Power Integrations, Inc v. Semiconductor Components, Appeal No. 2018-1607, the Federal...more

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