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.

1466 firms · 10873 total appearances across 3717 cases with counsel data.

FirmPlaintiffDefendantTotalTop courtsTop roles
Parsons Behle & Latimer617U.S. District Court for the District of Utah(6)U.S. District Court, District of New Jersey(1)local counsel
Klarquist Sparkman347Patent Trial and Appeal Board (PTAB)(4)Texas Eastern District Court(2)U.S. District Court for the Western District of Washington(1)lead counsel · counsel · of counsel
Hogan Lovells US347Patent Trial and Appeal Board (PTAB)(2)U.S. District Court, Northern District of California(2)Texas(1)Counsel · lead counsel · Attorney for Defendant
Rakoczy Molino Mazzochi Siwik257U.S. District Court for the District of New Jersey(2)Patent Trial and Appeal Board (PTAB)(1)S.D.N.Y.(1)lead counsel · counsel · Back-Up Counsel
Fredrikson & Byron347Patent Trial and Appeal Board (PTAB)(3)United States Judicial Panel on Multidistrict Litigation, centralized in the Southern District of Iowa.(2)Minnesota District Court(1)counsel · defense counsel · Counsel
Groombridge, Wu, Baughman & Stone167Patent Trial and Appeal Board (PTAB), United States Patent and Trademark Office (USPTO)(4)Texas Eastern District Court(1)U.S. Court of Appeals for the Federal Circuit(1)of counsel · counsel · lead counsel
Dowd Scheffel527U.S. Court of Appeals for the Federal Circuit(3)U.S. Patent and Trademark Office, Patent Trial and Appeal Board(2)U.S. District Court for the Eastern District of Virginia(1)appellate counsel · Of Counsel · co-counsel
Armstrong Teasdale167S.D.N.Y.(5)Patent Trial and Appeal Board (PTAB)(1)Texas Northern District Court(1)Of Counsel · lead counsel · defense team attorney
Vorys, Sater, Seymour and Pease347Patent Trial and Appeal Board (PTAB)(2)PTAB (USPTO)(1)U.S. District Court for the Southern District of Ohio(1)pro hac vice · back-up counsel · lead counsel
Ganfer Shore Leeds & Zauderer—77Patent Trial and Appeal Board (PTAB)(4)U.S. District Court for the Eastern District of New York(2)U.S. Court of Appeals for the Federal Circuit(1)local counsel
Davis Firm448Patent Trial and Appeal Board (PTAB)(3)U.S. District Court for the Eastern District of Texas, Marshall Division(2)District Court, E.D. Texas(1)local counsel · Counsel for Petitioner · counsel
Slayden Grubert Beard178Western District of Texas(5)Texas(1)U.S. District Court for the Eastern District of Texas(1)local counsel · Counsel · Local Counsel
Farney Daniels628U.S. District Court for the District of Vermont(2)U.S. District Court for the Southern District of California(2)Federal Trade Commission (administrative complaint)(1)Lead Counsel · counsel · lead counsel
Manatt, Phelps & Phillips448Patent Trial and Appeal Board (PTAB)(2)Texas Western District Court(2)U.S. District Court for the Northern District of Georgia(2)Counsel · lead counsel · of counsel
Durie Tangri178USPTO Patent Trial and Appeal Board(3)U.S. District Court for the Northern District of California(1)United States Court of Appeals for the Federal Circuit(1)trial counsel · counsel · of counsel
Davis Wright Tremaine448Arizona District Court(4)Patent Trial and Appeal Board (PTAB)(1)U.S. Court of Appeals for the Federal Circuit (from S.D.N.Y.)(1)Counsel · Litigation attorney · Of Counsel
J. Wesley Hill8—8Texas Eastern District Court(8)local counsel · Local Counsel · lead counsel
Cozen O'Connor718Patent Trial and Appeal Board (PTAB)(3)United States District Court for the Western District of Texas(3)California Central District Court(1)lead counsel · local counsel · Counsel for Plaintiff
Wyatt, Tarrant & Combs178United States District Court for the Western District of Tennessee, Memphis Division(3)U.S. District Court for the Western District of Tennessee(2)W.D. Tenn.(2)local counsel · counsel of record
Padmanabhan & Dawson268Patent Trial and Appeal Board (PTAB)(6)Delaware District Court(1)Texas Western District Court(1)lead counsel · Counsel · pro hac vice