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CAFC Patent Prosecution Claim Construction

Knobbe Martens

Deleted Specification Portions Undermine Claim Construction

Knobbe Martens on

FMC Corp. v. Sharda USA, LLC - Before Moore, Chen, and Barnett. Appeal from the Eastern District of Pennsylvania. The district court erred by construing a claim term based on disclosures made in a provisional application and...more

McDonnell Boehnen Hulbert & Berghoff LLP

In re BAC IP B.V. (Fed. Cir. 2025)

A patent applicant dissatisfied by an patent examiner's rejection of that applicant's claims in ex parte prosecution has recourse by appeal to the Patent Trial and Appeal Board (PTAB) under 35 U.S.C. § 134, and to the Federal...more

Morgan Lewis

Federal Circuit Applies Prosecution History Estoppel Based on Claim Cancellation

Morgan Lewis on

The US Court of Appeals for the Federal Circuit recently held that cancellation of a claim during prosecution may give rise to prosecution history estoppel, precluding the patentee from recapturing the surrendered subject...more

Womble Bond Dickinson

Reminder: “Consisting essentially of” Is U.S. Patent Claim Language Needing Interpretation

Womble Bond Dickinson on

On June 30, 2025, the Federal Circuit issued a precedential opinion in Eye Therapies v. Slayback Pharma in which the court interpreted the transition phrase “consisting essentially of” to be a closed term excluding other...more

MoFo Life Sciences

In Patent Prosecution, You Have the Right to Remain Silent. Anything You Say Can and Will Be Used Against You in the Court of Law

MoFo Life Sciences on

While a Miranda warning isn’t given prior to starting substantive examination, perhaps it should be. In Azurity Pharmaceuticals, Inc. v. Alkem Laboratories, Ltd., a precedential decision issued on April 8, 2025, the Federal...more

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