Understanding the Impact of IPR Estoppel and PTAB Discretionary Denials — Patents: Post-Grant Podcast
New Developments in Obviousness-Type Double Patenting and Original Patent Requirements — Patents: Post-Grant Podcast
Inter Partes Review: Validity Before the PTAB
In a decision that underscores the primacy of prosecution history to determine claim scope, the US Court of Appeals for the Federal Circuit reversed the Patent Trial & Appeal Board’s interpretation of the transitional phrase...more
Eye Therapies, LLC v. Slayback Pharma, LLC, Appeal No. 2023-2173 (Fed. Cir. June 30, 2025) In its only precedential patent opinion last week, the Federal Circuit reviewed construction of the transitional claim phrase...more
On June 9, 2025, the Patent Trial and Appeal Board (“Board”) issued a Final Written Decision (“FWD”) in Merck’s IPR2024-00240 against The Johns Hopkins University’s (“JHU”) U.S. Patent No. 11,591,393 (“the ’393 patent”),...more
On June 26, 2025, Sarepta Therapeutics filed IPR2025-01194, challenging as obvious claims 3-6 of Genzyme’s U.S. Patent No. 9,051,542 (“the ’542 patent), and IPR2025-01195 challenging claims 1-4, 6-7 and 11 of U.S. Patent No....more
As has been noted recently (Agilent Technologies, Inc. v. Synthego Corp.), fact-based decisions from the U.S. Patent and Trademark Office (typically from the Patent Trial and Appeal Board) are reviewed under the substantial...more
Etanercept Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more
Precedential and Key Federal Circuit Opinions - ALNYLAM PHARMACEUTICALS, INC. v. MODERNA, INC. [OPINION] (2023-2357, 06/04/2025) (Taranto, Chen, Hughes) - Taranto, J. The Court affirmed the district court’s claim...more
Restem filed a petition for inter partes review of U.S. Patent No. 9,803,176, directed to stem cells obtained from umbilical cord tissue and isolated through a two-step process to create a specific cell marker expression...more
United Therapeutics Corp. (UTC) and Liquidia Technologies Inc. have been battling for close to a decade over their respective inhaled formulations of treprostinil (UTC's Tyvaso®, Liquidia's Yutrepia™) for treatment of...more
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
Tocilizumab Challenged Claim Types in IPRs: Claims are counted in each IPR, so claims from the same patent challenged in multiple IPRs are counted more than once. Within each IPR, claims are counted only once, whether they...more
On January 15, 2025, Celltrion filed IPR2025-00456 against Regeneron’s U.S. Patent No. 11,084,865 (“the ’865 patent”), challenging claims 1-17, 19-42, 44-50 as anticipated and claims 1-50 as obvious....more
Mirror Worlds Technologies, LLC v. Meta Platforms, Inc., Appeal Nos. 2022-1600, -1709 (Fed. Cir. Dec. 4, 2024) In this appeal from the United States District Court for the Southern District of New York, the Federal...more
Last week the Federal Circuit handed down a pair of non-precedential decisions affirming the Patent Trial and Appeal Board (PTAB) in inter partes review (IPR) proceedings. This post concerns the decision in Medtronic, Inc....more
Zap filed an IPR petition alleging obviousness of a patent owned by Elekta. The petition relied on a combination of two references. The Board found a reason to combine the references and ultimately found obviousness of the...more
Precedential and Key Federal Circuit Opinions - 1. PARKERVISION, INC. v. VIDAL [OPINION] (2022-1548, 12/15/2023) (Prost, Wallach, and Chen)* - Chen, J. The Court affirmed the PTAB’s determination that the patent...more
The Federal Circuit reviewed the latest decision from the Patent Trial and Appeal Board (PTAB) in an inter partes review that claims 3-6 and 10 of U.S. Patent No. 6,548,019 are obvious, in Rembrandt Diagnostics LP v. Alere,...more
Objective Evidence in Determining Obviousness - In Medtronic, Inc. v. Teleflex Innovations, Appeal No. 21-2357, the Federal Circuit held that a close prima facie case of obviousness can be overcome by strong evidence of...more
In Sanofi-Aventis Deutschland GmbH v. Mylan Pharm. Inc., Case No. 2021-1981, the Federal Circuit reversed an obviousness determination by the PTAB. At issue was Sanofi’s reissued U.S. Patent No. RE47,614 (the ’614 patent),...more
MEDTRONIC, INC. v. TELEFLEX INNOVATIONS - Before Moore, Lourie, and Dyk. Appeal from the Patent Trial and Appeal Board. Summary: A close prima facie case of obviousness can be overcome by strong evidence of objective...more
Last week, Celltrion filed an IPR petition, PTAB IPR2023-00462, seeking cancellation of claims 1-18 of U.S. Patent No. 10,464,992 (“the ’992 patent”), assigned to Regeneron Pharmaceuticals, Inc. According to the Petition, the...more
ACI’s 8th Annual Paragraph IV Disputes Master Symposium returns in person to Chicago on September 21-22! Join leading pharmaceutical patent litigators for brand name and generic drug companies to receive up-to-the-minute...more
ALMIRALL, LLC v. AMNEAL PHARMACEUTICALS LLC - Before Lourie, Chen, and Cunningham. Appeal from the Patent Trial and Appeal Board. Summary: Presumption of obviousness based on overlapping ranges applied where a...more