PTAB pioneers representing both petitioners and patent owners
Our professionals have handled more than 1,400 cases before the Patent Trial and Appeal Board (PTAB) at the U.S. Patent and Trademark Office (USPTO)—we know our way around the PTAB’s unique procedures and potential pitfalls. In handling inter partes review (IPR), post-grant review (PGR), and covered business method review (CBM) proceedings, there are many opportunities for a procedural misstep or strategic miscalculation. The administrative patent judges are patent attorneys with science and technology backgrounds. They can and often do get into the weeds about the patented technology, prior art, and PTAB procedures. When arguing before the Board, a detailed understanding of both the technology and the law is essential. While we have been recognized as the most experienced firm in representing petitioners, a distinguishing feature of our practice is that we also devote a significant portion of our practice to defending patent owners. Our experience on both sides of the table allows us to be an objective resource for clients facing post-grant challenges.
Routinely scrutinizing the rules, requirements, and nuances of each proceeding, as well as the PTAB’s evolving guidelines, positions Finnegan to counsel clients on the best tools for challenging the patents at issue, or likewise, fending off attacks. We approach cases with lean teams of attorneys that bring a mix of procedural insight, knowledge of the technology at issue, and trial experience briefing and arguing cases before the Board. Our PTAB practitioners are well versed in coordinating across attorney teams handling related litigation in district court or before the International Trade Commission (ITC), whether the team is from Finnegan or another law firm. This integrated approach allows us to provide clients with effective, efficient representation in all PTAB proceedings.
On our At the PTAB Blog, we publish a subset of the USPTO’s PTAB data we track monthly, as well as posts summarizing and analyzing PTAB news and information. We also publish a subset of our cumulative PTAB data here.
Obtained complete victory against Carrum on appeal of the District of Delaware’s claim construction to the Federal Circuit following Carrum’s stipulation of non-infringement under the claim construction, thereby exonerating BMW’s ACC system, first sold in 2000, against Carrum’s 2004 patents. Invalidated several asserted claims through post-grant efforts before the U.S. Patent Office, including IPRs and EPRs, and pursued claims through proceedings before the Eastern District of Virginia to vindicate BMW’s patent challenges.
1:18-cv-01645, D. Del., Judge Andrews
21-1435, 24-1480, Fed. Cir., Judges Clevenger, Cunningham, Lourie, Moore, Prost, Taranto
IPR2019-00902, -00903, -00904, -00905, -00927, 00928, PTAB, Judges Browne, Scanlon, Tornquist
90/019,010, CRU
Finnegan represented Bausch & Lomb’s licensee Eye Therapies, LLC in an appeal at the U.S. Court of Appeals for the Federal Circuit from a Patent Trial and Appeal Board (PTAB) decision finding Eye Therapies’ patent directed to a low-dose brimonidine treatment for eye redness (Lumify®) to be unpatentable. In a precedential decision, the Federal Circuit agreed with Finnegan’s arguments and found that the Board had wrongly invalidated the patent based on an incorrect claim construction, vacating and remanding the case back to the PTAB. The proceeding settled shortly thereafter
23-2173, Fed. Cir., Judges Taranto, Stoll, Scarsi
Representing FaceTec, Inc. in four inter partes reviews (IPRs) relating to groundbreaking 3D liveness detection technology.
IPR2025-00106, -00107, -00108, -00109, PTAB, Judges Khan, Hoang, Baer
Secured a covenant-not-to-sue and zero-dollar walkaway for BMW Group in a declaratory judgment action, concluding Arigna’s high-profile patent enforcement campaign involving current amplification technology. This outcome follows a decisive ITC victory, the dismissal of parallel District Court litigation, and multiple concurrent patent office challenges pending at the time of resolution.
1:23-cv-01190, D.D.C., Judge Contreras
2:21-cv-00173, E.D. Tex.
IPR2021-01531, PTAB, Judges Baer, Fenick, Iftikhar
23-1931, Fed. Cir.
90/019,261, USPTO
2:24-cv-00260, E.D. Tex., Judge Gilstrap
IPR2025-00592, -00593, -00594, -00595, PTAB
337-TA-1367, ITC, Judge Moore
2:23-cv-10783, C.D. Cal., Judges Anelle-Rocha, Eick
IPR2023-01414, PTAB, Judges Abraham, Cass, Hamann
At the PTAB Blog
June 30, 2026
At the PTAB Blog
June 18, 2026
Federal Circuit IP Blog
Federal Circuit Reinforces Injury-in-Fact Requirement in Appeals from Post-Grant Proceedings
June 10, 2026
Award/Ranking
Six Finnegan Partners Recognized in the 2026 Lawdragon 500 Leading Global IP Lawyers
June 22, 2026
Award/Ranking
June 5, 2026
Award/Ranking
Finnegan Earns Top Rankings in 2026 IAM Patent 1000 Guide; Nearly 60 Attorneys Ranked
May 28, 2026
Commentary
Litigation Leaders: Finnegan’s Jennifer Roscetti on the Advantages of Being Fully Focused on IP
April 6, 2026
Commentary
Squires’ Latest PTAB Memo Seeks to Boost U.S. Manufacturing with New Discretionary Factors
March 18, 2026
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