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.

1242 firms · 7315 total appearances across 2525 cases with counsel data.

FirmPlaintiffDefendantTotalTop courtsTop roles
Morrison & Foerster133750Texas Eastern District Court(10)Texas Western District Court(9)Patent Trial and Appeal Board (PTAB)(8)Lead Counsel · Counsel · counsel
Rabicoff Law45550Texas Eastern District Court(28)Texas Western District Court(9)Patent Trial and Appeal Board(3)lead counsel · Lead Counsel · of counsel
Desmarais172946Texas Eastern District Court(12)U.S. District Court for the District of Delaware(10)Patent Trial and Appeal Board (PTAB)(6)lead counsel · counsel · Lead Counsel
Richards, Layton & Finger133245U.S. District Court for the District of Delaware(34)Patent Trial and Appeal Board (PTAB)(6)Court of Appeals for the Federal Circuit(1)local counsel · Local Counsel · Counsel
Irell & Manella242145Texas Eastern District Court(17)Patent Trial and Appeal Board (PTAB)(6)U.S. District Court for the Western District of Texas(4)lead counsel · Counsel · of counsel
O'Melveny & Myers93645Patent Trial and Appeal Board (PTAB)(13)Texas Eastern District Court(12)U.S. District Court for the Western District of Texas(4)Back-Up Counsel · lead counsel · Lead Counsel
Erise IP40545Patent Trial and Appeal Board (PTAB)(38)U.S. District Court for the Northern District of Georgia(2)California Central District Court(1)lead counsel · Lead Counsel · Back-Up Counsel
Morgan, Lewis & Bockius142842Patent Trial and Appeal Board (PTAB)(13)U.S. District Court for the Western District of Texas(6)Texas Eastern District Court(4)Counsel · lead counsel · Lead Counsel
Caldwell Cassady & Curry311142Texas Eastern District Court(9)U.S. District Court for the Southern District of Iowa(9)Patent Trial and Appeal Board (PTAB)(8)Lead Counsel · Counsel · lead 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
Heim, Payne & Chorush271441Patent 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
Kasowitz Benson Torres251540Texas Western District Court(13)Texas Eastern District Court(6)Delaware District Court(5)Counsel · lead counsel · 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
Ramey39—39Texas Western District Court(9)Texas Eastern District Court(7)Texas Northern District Court(7)lead counsel · Lead Counsel · of 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
Winston & Strawn112839U.S. District Court for the Eastern District of Texas(15)Patent Trial and Appeal Board (PTAB)(6)Delaware District Court(4)lead counsel · Counsel · of counsel
Orrick, Herrington & Sutcliffe122739Texas Eastern District Court(11)Patent Trial and Appeal Board (PTAB)(8)U.S. District Court for the District of Delaware(6)Lead Counsel · Counsel · lead counsel
Cooley73138Patent Trial and Appeal Board (PTAB)(11)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
Jones Day142337Texas 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
DLA Piper122335Texas Eastern District Court(11)U.S. District Court for the Western District of Texas(7)Patent Trial and Appeal Board (PTAB)(5)Counsel · Lead Counsel · Partner
Foley & Lardner161834Patent Trial and Appeal Board (PTAB)(11)Texas Eastern District Court(5)U.S. District Court for the Central District of California(4)lead counsel · counsel · Lead Counsel
Wilson Sonsini Goodrich & Rosati142034Patent Trial and Appeal Board (PTAB)(13)U.S. District Court for the District of Delaware(9)U.S. Court of Appeals for the Federal Circuit(2)lead counsel · of counsel · Counsel
Haynes and Boone191433Patent Trial and Appeal Board (PTAB)(21)U.S. Court of Appeals for the Federal Circuit(5)Texas Western District Court(3)Counsel · counsel · Back-up Counsel