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.

1280 firms · 7744 total appearances across 2683 cases with counsel data.

FirmPlaintiffDefendantTotalTop courtsTop roles
Morrison & Foerster134356Texas Western District Court(12)Texas Eastern District Court(11)Patent Trial and Appeal Board (PTAB)(9)Lead Counsel · Counsel · lead counsel
Irell & Manella302353Texas Eastern District Court(20)Patent Trial and Appeal Board (PTAB)(8)U.S. District Court for the Western District of Texas(5)lead counsel · Counsel · of counsel
Desmarais183452Texas Eastern District Court(14)U.S. District Court for the District of Delaware(10)Patent Trial and Appeal Board(8)lead counsel · counsel · Lead Counsel
Rabicoff Law45550Texas Eastern District Court(28)Texas Western District Court(9)Patent Trial and Appeal Board(3)lead counsel · Lead Counsel · of counsel
Richards, Layton & Finger133548U.S. District Court for the District of Delaware(37)Patent Trial and Appeal Board (PTAB)(6)Court of Appeals for the Federal Circuit(1)local counsel · Local Counsel · Counsel
O'Melveny & Myers113748Patent Trial and Appeal Board (PTAB)(15)Texas Eastern District Court(13)U.S. District Court for the Western District of Texas(4)Back-Up Counsel · lead counsel · Lead Counsel
Erise IP41647Patent Trial and Appeal Board (PTAB)(39)Texas Western District Court(2)U.S. District Court for the Northern District of Georgia(2)lead counsel · Lead Counsel · counsel
Morgan, Lewis & Bockius153045Patent Trial and Appeal Board (PTAB)(14)U.S. District Court for the Western District of Texas(6)Texas Eastern District Court(4)lead counsel · Counsel · Lead Counsel
Kasowitz Benson Torres271643Texas Western District Court(15)Texas Eastern District Court(6)Delaware District Court(5)Counsel · lead counsel · counsel
Caldwell Cassady & Curry311243Patent Trial and Appeal Board (PTAB)(9)Texas Eastern District Court(9)U.S. District Court for the Southern District of Iowa(9)Lead Counsel · Counsel · lead counsel
Winston & Strawn113142U.S. District Court for the Eastern District of Texas(16)Patent Trial and Appeal Board (PTAB)(6)Delaware District Court(4)lead counsel · Counsel · of counsel
Heim, Payne & Chorush281442Patent Trial and Appeal Board (PTAB)(15)U.S. District Court for the Eastern District of Texas(12)U.S. District Court for the District of Delaware(4)lead counsel · Counsel · Backup Counsel
Unified Patents40242Patent Trial and Appeal Board (PTAB)(38)Central Reexamination Unit (CRU) of the USPTO(2)United States Patent and Trademark Office (USPTO)(1)in-house · Senior Patent Counsel · in-house counsel
Orrick, Herrington & Sutcliffe142741Texas Eastern District Court(11)Patent Trial and Appeal Board (PTAB)(9)U.S. District Court for the District of Delaware(6)lead counsel · Lead Counsel · Counsel
DLA Piper122941Texas Eastern District Court(13)U.S. District Court for the Western District of Texas(7)Patent Trial and Appeal Board (PTAB)(6)Counsel · Lead Counsel · lead counsel
Ramey40—40Texas Western District Court(9)Texas Eastern District Court(7)Texas Northern District Court(7)lead counsel · Lead Counsel · of counsel
Fabricant241640U.S. District Court for the Eastern District of Texas(16)Patent Trial and Appeal Board (PTAB)(14)U.S. District Court for the Western District of Texas(5)Counsel · Lead Counsel · lead counsel
Parker, Bunt & Ainsworth281139U.S. District Court for the Eastern District of Texas(26)U.S. District Court for the Western District of Texas(3)Court of Appeals for the Federal Circuit(2)local counsel · Local Counsel · Lead Counsel
Cooley73239Patent Trial and Appeal Board (PTAB)(12)U.S. District Court for the Eastern District of Texas(6)U.S. District Court for the District of Delaware(5)lead counsel · Lead Counsel · of counsel
Haynes and Boone221739Patent Trial and Appeal Board (PTAB)(22)U.S. Court of Appeals for the Federal Circuit(5)Texas Western District Court(3)Counsel · counsel · Back-up Counsel
Jones Day152338Texas Eastern District Court(11)Delaware District Court(5)Patent Trial and Appeal Board (PTAB)(5)lead counsel · Lead Counsel · counsel
K&L Gates181937Texas Eastern District Court(15)Patent Trial and Appeal Board (PTAB)(6)Delaware District Court(2)Counsel · lead counsel · Lead Counsel
Kilpatrick Townsend & Stockton122537Texas Eastern District Court(8)Patent Trial and Appeal Board(4)Texas Western District Court(4)Counsel · counsel · lead counsel
Foley & Lardner171936Patent Trial and Appeal Board (PTAB)(12)Texas Eastern District Court(5)U.S. District Court for the Central District of California(4)lead counsel · counsel · Lead Counsel
Mintz, Levin, Cohn, Ferris, Glovsky and Popeo161834Patent Trial and Appeal Board (PTAB)(15)Texas Western District Court(5)Delaware District Court(3)Lead Counsel · Counsel · lead counsel