News & Analysis as of

Appeals Inter Partes Review (IPR) Proceeding Pfizer

Venable LLP

Federal Circuit Affirms PTAB’s Unpatentability Findings in Gene Therapy Hemgenix® IPRs

Venable LLP on

On May 22, 2025, the CAFC affirmed the PTAB’s (Board) Final Written Decisions in Pfizer’s IPR2021-00925 and IPR2021-00926 finding all challenged claims of uniQure’s U.S. Patent No. 9,982,248 (“the ’248 patent”) unpatentable...more

Knobbe Martens

Routine Optimization of Result-Effective Variable Can Bridge Gaps in Prior Art

Knobbe Martens on

PFIZER INC. v. SANOFI PASTEUR INC. - Before Lourie, Bryson, and Stark.  Appeal from the Patent Trial and Appeal Board....more

McDonnell Boehnen Hulbert & Berghoff LLP

Pfizer Inc. v. Chugai Pharmaceuticals Co. (Fed. Cir. 2020)

The Federal Circuit continued its explication of the standing issue for unsuccessful petitioners in inter partes review (see "Argentum Pharmaceuticals LLC v. Novartis Pharmaceuticals Corp. (Fed. Cir. 2020)") in Pfizer Inc. v....more

Goodwin

Federal Circuit Finds Pfizer’s RUXIENCE Plans Insufficient to Establish Standing to Appeal IPR

Goodwin on

On April 27, 2020, the Federal Circuit issued a non-precedential opinion ruling that Pfizer failed to establish Article III standing in a pair of IPR appeals.  At the PTAB, Pfizer had challenged the validity of Chugai’s...more

Goodwin

Biosimilar Appellate Roundup: Upcoming Oral Arguments and Decisions

Goodwin on

On December 6, 2019, the Federal Circuit will hear oral argument in a rituximab-related appeal by Biogen.  The appeal stems from a final written decision of the Patent Trial and Appeal Board (PTAB) in an inter partes review...more

Goodwin

Biosimilar IPR Appeal Updates

Goodwin on

Following the Celltrion and Pfizer settlements of the trastuzumab litigation, the Federal Circuit granted the request of the Director of the PTO to intervene under 35 U.S.C. § 143 (i.e., defend a PTAB decision when a...more

Goodwin

Biosimilar-Related Appeals Pending before the Federal Circuit

Goodwin on

There are presently seven biosimilar-related appeals pending before the Federal Circuit. Two of those appeals, Amgen v. Sandoz (Case No. 18-1551) and Amgen v. Coherus (Case No. 18-1993), are from district court judgments in...more

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