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.

1447 firms · 10650 total appearances across 3619 cases with counsel data.

FirmPlaintiffDefendantTotalTop courtsTop roles
Ross Aronstam & Moritz—99Patent Trial and Appeal Board(6)U.S. District Court for the District of Delaware(2)United States District Court for the District of Delaware, Wilmington Division(1)local counsel · lead counsel · Local counsel
Lewis Brisbois Bisgaard & Smith459U.S. District Court for the Central District of California(6)U.S. District Court for the District of Delaware(2)U.S. District Court for the Eastern District of Texas(1)Lead Counsel · lead counsel · Counsel
Knobbe Martens459Patent Trial and Appeal Board (PTAB)(3)California Northern District Court(1)U.S. District Court for the Central District of California(1)counsel · lead counsel · key counsel
Reinhart Boerner Van Deuren189Wisconsin Eastern District Court(6)Patent Trial and Appeal Board (PTAB)(1)U.S. District Court for the Southern District of New York; transferred to the U.S. District Court for the District of Massachusetts(1)local counsel · Counsel · counsel
Cravath, Swaine & Moore189Patent Trial and Appeal Board (PTAB)(5)Texas Eastern District Court(1)U.S. District Court for the Central District of California(1)lead counsel · of counsel · Lead Counsel
Steptoe459Patent Trial and Appeal Board (PTAB)(6)Delaware District Court(1)Texas Eastern District Court(1)Attorney · lead counsel · Counsel
BC Law Group639Texas Western District Court(3)U.S. District Court for the Eastern District of Texas(3)Patent Trial and Appeal Board (PTAB)(1)Counsel · Lead Counsel · lead counsel
Carter Arnett549Patent Trial and Appeal Board (PTAB)(4)United States District Court for the Western District of Texas(3)U.S. Court of Appeals for the Federal Circuit(1)Counsel · Attorney of record · counsel
Hatch Law Group459U.S. District Court for the District of Utah(6)U.S. Court of Appeals for the Federal Circuit(2)PTAB(1)local counsel · Local Counsel · Counsel
Maschoff Brennan369U.S. District Court for the District of Utah(5)United States District Court for the Eastern District of Texas(2)Court of Appeals for the Federal Circuit (CAFC)(1)Of Counsel · trial counsel · Lead Counsel
Baker, Donelson, Bearman, Caldwell & Berkowitz189E.D. Tex.(2)U.S. District Court, Eastern District of Texas(2)E.D. Tex. (Judge Rodney Gilstrap)(1)local counsel · Local Counsel · lead counsel
Holland & Hart459Wyoming District Court(3)Texas Eastern District Court(2)D. Del. (Judge Noreika)(1)Of Counsel · Counsel of Record · counsel
Cole Schotz549Texas Eastern District Court(5)Patent Trial and Appeal Board (PTAB)(2)California Central District Court(1)Attorney to be Noticed · attorney to be noticed · Counsel
Troutman Pepper Locke459Patent Trial and Appeal Board (PTAB)(2)Texas Eastern District Court(2)North Carolina Middle District Court(1)co-counsel · lead counsel · Back-up Counsel
Senniger Powers448USPTO Patent Trial and Appeal Board(4)U.S. Court of Appeals for the Federal Circuit(1)United States District Court for the Western District of Missouri(1)attorney of record · back-up counsel · lead counsel
Norton Rose Fulbright178U.S. District Court for the Southern District of Texas(3)Patent Trial and Appeal Board (PTAB)(2)Court of Appeals for the Federal Circuit(1)trial counsel · lead defense counsel · lead counsel
Chachkes Law448Texas Eastern District Court(5)Attorney · Attorney for Defendants · Principal Attorney
Volpe Koenig178Patent Trial and Appeal Board (PTAB)(7)New York Southern District Court(1)Counsel for Patent Owner · lead counsel · Shareholder
Jeffer Mangels Butler & Mitchell538Patent Trial and Appeal Board, U.S. Patent and Trademark Office(5)California Central District Court(1)U.S. District Court for the Southern District of Florida, Miami Division(1)backup counsel · Lead Counsel · Partner
Radulescu448Patent Trial and Appeal Board, U.S. Patent and Trademark Office(5)Delaware District Court(1)U.S. District Court for the Northern District of Ohio(1)lead counsel · back-up counsel · Of Counsel