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 · 10901 total appearances across 3732 cases with counsel data.

FirmPlaintiffDefendantTotalTop courtsTop roles
McDermott Will & Emery131932U.S. District Court for the District of Delaware(9)Patent Trial and Appeal Board (PTAB)(8)U.S. District Court for the Northern District of California(3)lead counsel · of counsel · Lead Counsel
Nixon Peabody131932Patent Trial and Appeal Board (PTAB)(10)U.S. District Court for the Eastern District of Texas, Marshall Division(5)U.S. District Court for the District of Delaware(3)Counsel · lead counsel · back-up counsel
Robins Kaplan191332Patent Trial and Appeal Board (PTAB)(11)Texas Eastern District Court(8)U.S. District Court, Central District of California(4)counsel · lead counsel · pro hac vice
Williams & Connolly26733U.S. District Court for the District of Delaware(13)New Jersey District Court(6)U.S. Patent Trial and Appeal Board(5)counsel · lead counsel · Lead Counsel
Daignault Iyer181634Patent Trial and Appeal Board (PTAB)(13)Virginia Eastern District Court(5)Delaware District Court(4)of counsel · lead counsel · Counsel
Ashby & Geddes161935U.S. District Court for the District of Delaware(24)Patent Trial and Appeal Board (PTAB)(4)Court of Appeals for the Federal Circuit(3)local counsel · Local Counsel · Lead Counsel
Scheef & Stone161935U.S. District Court for the Eastern District of Texas(20)Patent Trial and Appeal Board(6)Texas Western District Court(3)local counsel · Local Counsel · Local Counsel/Lead Counsel
Weil, Gotshal & Manges92736Patent Trial and Appeal Board (PTAB)(7)District of Delaware(6)U.S. District Court for the Western District of Texas(5)Lead Counsel · lead counsel · Counsel
Unified Patents35136Patent Trial and Appeal Board (PTAB)(33)Central Reexamination Unit (CRU) of the USPTO(2)United States Patent and Trademark Office (USPTO)(1)in-house · Senior Patent Counsel · in-house counsel
Sheppard, Mullin, Richter & Hampton132437Patent Trial and Appeal Board (PTAB)(11)U.S. District Court for the Central District of California(7)Delaware District Court(3)lead counsel · back-up counsel · Counsel
Ropes & Gray122537Patent Trial and Appeal Board (PTAB)(14)U.S. Court of Appeals for the Federal Circuit(5)Delaware District Court(3)lead counsel · appellate counsel · back-up counsel
Covington & Burling162137Texas Eastern District Court(14)Patent Trial and Appeal Board (PTAB)(8)U.S. District Court for the District of Delaware(4)Counsel · lead counsel · Lead Counsel
Young Conaway Stargatt & Taylor211637U.S. District Court for the District of Delaware(25)Patent Trial and Appeal Board (PTAB)(3)D. Del.(2)local counsel · Local Counsel · lead local counsel
Norton Rose Fulbright US83038Patent Trial and Appeal Board (PTAB)(9)U.S. Court of Appeals for the Federal Circuit(6)Texas Western District Court(5)trial counsel · counsel · lead counsel
Reed Smith73138Patent Trial and Appeal Board(9)U.S. Court of Appeals for the Federal Circuit(9)U.S. District Court for the Eastern District of Virginia(4)lead counsel · trial counsel · appellate counsel
Heim, Payne & Chorush251439Patent Trial and Appeal Board (PTAB)(14)U.S. District Court for the Eastern District of Texas(11)U.S. District Court for the District of Delaware(4)lead counsel · Counsel · Backup Counsel
Latham & Watkins113041Patent Trial and Appeal Board (PTAB)(12)U.S. District Court for the District of Delaware(8)California Central District Court(3)lead counsel · Of Counsel · counsel
Parker, Bunt & Ainsworth311142U.S. District Court for the Eastern District of Texas(28)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
Foley & Lardner202242Patent Trial and Appeal Board (PTAB)(14)Texas Eastern District Court(5)U.S. District Court for the Central District of California(4)lead counsel · trial counsel · Lead Counsel
Cooley73542Patent Trial and Appeal Board (PTAB)(13)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