News & Analysis as of

Patent Trial and Appeal Board Disclaimers

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

Rothwell, Figg, Ernst & Manbeck, P.C.

Federal Circuit Draws the Line of Disclaimers’ Binding Power

In the Federal Circuit’s recent decision of CUPP Computing AS v. Trend Micro Inc., the Court made the precedential holding that the Patent Trial and Appeal Board (“the Board”) is not bound by a party’s disclaimer in the very...more

Rothwell, Figg, Ernst & Manbeck, P.C.

Regeneron Disclaims an Aflibercept Formulation Patent in Response to Celltrion PGR

On March 14, 2022, Regeneron Pharmaceuticals Inc. (“Regeneron”) filed a statutory disclaimer under 37 CFR § 1.321 disclaiming all claims of U.S. Patent No. 10,857,231 B2 (the “’231 patent”) in response to a petition for a...more

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit: Statutory Disclaimer Results in No Case or Controversy

The Federal Circuit ruled that statutory disclaimer terminates the case or controversy between the parties in an infringement suit as to those claims, and immediately deprives the district court of the authority to take...more

Knobbe Martens

Federal Circuit Review - May 2018

Knobbe Martens on

Priority Claims Cannot Be Incorporated by Reference - In Vanda Pharmaceuticals Inc. v. West-Ward Pharmaceuticals International Limited, Appeal Nos. 2016-2707 and 2016-2708, the Federal Circuit held that when a patent for a...more

Jones Day

Expanded Panel Ratifies Post-Petition Disclaimer As Legitimate CBM Eligibility Strategy

Jones Day on

An expanded panel at the PTAB has found that post-Petition claim cancellation is a legitimate strategy for patent owners to avoid CBM jurisdiction. In deciding petitioner’s Institution Decision Rehearing Request in Facebook,...more

McDermott Will & Emery

Disclaimer of All Challenged Claims Results in Denial of IPR Institution

McDermott Will & Emery on

The Patent Trial and Appeal Board (PTAB) denied institution of inter partes review (IPR) where the patent owner filed a statutory disclaimer of all claims challenged in the petition. Xilinx, Inc. v. Godo Kaisha IP Bridge 1,...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

Wilson Sonsini Goodrich & Rosati

The PTAB Review - June 2017

Escaping PTAB Review Through Strategic Disclaimer in CBM Proceedings - A patent is only eligible for covered business method (CBM) review if it: (1) claims a method or apparatus for performing data processing or other...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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