Counsel registry

Representatives

Law firms representing parties in tracked US patent litigation. Counts come from per-case “Plaintiff representatives” and “Defendant representatives” sections. A firm with multiple attorneys on one case counts as a single appearance per side. Click any column header to sort; defaults to total cases, descending.

1465 firms · 10853 total appearances across 3705 cases with counsel data.

FirmPlaintiffDefendantTotalTop courtsTop roles
Dinsmore & Shohl2—2Patent Trial and Appeal Board (PTAB)(1)U.S. District Court for the Eastern District of Kentucky, Lexington Division(1)local counsel · Lead Counsel
Jackson Kelly2—2West Virginia Northern District Court(2)of counsel · Local Counsel
Flaherty Sensabaugh Bonasso—22West Virginia Northern District Court(2)local counsel
Umhofer, Mitchell & King2—2New Jersey District Court(1)U.S. District Court for the Central District of California (transferred to N.D.W. Va.); U.S. Court of Appeals for the Federal Circuit(1)Local Counsel · Local Counsel (initially in C.D. Cal.)
Carey Douglas Kessler & Ruby2—2U.S. District Court for the Northern District of West Virginia(2)local counsel · Local Counsel
Marshall, Gerstein & Borun112District of New Jersey(1)U.S. District Court for the Central District of California (transferred to N.D.W. Va.); U.S. Court of Appeals for the Federal Circuit(1)trial counsel · lead trial counsel; liaison counsel · counsel
Goodwin112Patent Trial and Appeal Board (PTAB)(1)Texas Eastern District Court(1)lead counsel · Of Counsel
Carlson Caspers IP Litigation & Counseling112United States District Court for the District of Minnesota(1)Counsel · Lead Counsel
Caldwell Intellectual Property Law2—2Patent Trial and Appeal Board (PTAB)(1)United States District Court for the District of Massachusetts(1)counsel · lead counsel
Schwegman Lundberg & Woessner—22Patent Trial and Appeal Board (PTAB)(2)of counsel · lead counsel
Skipper Law112Eastern District of Texas, Marshall Division(1)Patent Trial and Appeal Board (PTAB)(1)lead counsel · counsel
Lee & Ko—22Eastern District of Texas, Marshall Division(2)Counsel · Lead Counsel · Korean Counsel
Klarquist2—2United States District Court for the Western District of Texas, Waco Division(1)Washington Western District Court(1)local counsel · Lead Counsel
Patterson Thuente IP112California Northern District Court(1)PTAB(1)Counsel
Finnegan2—2Patent Trial and Appeal Board, U.S. Patent and Trademark Office(1)Texas Eastern District Court(1)back-up counsel · lead counsel
The Concept Law Group112Ohio Northern District Court(1)PTAB(1)Partner, Registered Patent Attorney · Partner, Litigation and Entertainment Law · Associate
A&O Shearman2—2Patent Trial and Appeal Board (PTAB)(2)Petitioner Counsel · lead counsel
Lash & Goldberg—22Florida Southern District Court(2)local counsel · lead local counsel
Kercsmar & O'Hara112Patent Trial and Appeal Board (PTAB)(1)U.S. District Court for the Northern District of California(1)Lead Counsel · lead counsel · counsel
Meta Platforms112Patent Trial and Appeal Board (PTAB)(1)U.S. District Court for the Western District of Washington(1)in-house · In-House Counsel