News & Analysis as of

Patent Litigation Inter Partes Review (IPR) Proceeding Disclaimers

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

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

WilmerHale

Federal Circuit Patent Watch: IPR disclaimers are binding in later proceedings but not in the proceeding in which it is made

WilmerHale on

Precedential Federal Circuit Opinions - 1.  VLSI TECHNOLOGY LLC v. INTEL CORPORATION [OPINION]  (2021-1826, 11/15/22) (Chen, Bryson, Hughes) - Bryson, J. Affirming in part, reversing in part, and remanding...more

Haug Partners LLP

Narrowing the Disclaimer Doctrine: Federal Circuit Cabins the Reach of Disclaimers in the IPR Context

Haug Partners LLP on

OVERVIEW - The United States Court of Appeals for the Federal Circuit recently affirmed three Inter Partes Review (IPR) final written decisions of the U.S. Patent Trial and Appeal Board (“the Board”) where the Board...more

Schwabe, Williamson & Wyatt PC

Fresh From the Bench: Precedential Patent Cases From the Federal Circuit

Core Wireless v. LG affirms the denial of summary judgment as to unpatentable subject matter, ruling that the asserted claims are directed to an improved user interface for computing devices, not to the abstract idea of an...more

Akin Gump Strauss Hauer & Feld LLP

Eastern District of Texas Judge Holds that Statements Made to PTAB Constitute Disclaimer

On September 9, 2017, an Eastern District of Texas magistrate judge issued a report and recommendation holding that a plaintiff was estopped from asserting its patent infringement claims because statements made in response to...more

Latham & Watkins LLP

Patent Owner Statements During IPR May Limit Claim Scope

Latham & Watkins LLP on

Federal Circuit holds that patent owner’s statements can trigger prosecution disclaimers. On May 11, 2017 in Aylus Networks, Inc. v. Apple Inc., the Federal Circuit addressed for the first time whether statements made...more

McDermott Will & Emery

Patent Owner’s Disclaimers Results in IPR Institution Denial; Not an Adverse Judgment - FCA US LLC v. Jacobs Vehicle Systems, Inc.

McDermott Will & Emery on

Addressing the effect of disclaimed claims challenged in an inter partes review (IPR) petition, a panel of the Patent Trial and Appeal Board (the PTAB or Board) determined that challenged claims disclaimed prior to IPR...more

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