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
Wolf, Greenfield & Sacks202242Patent Trial and Appeal Board (PTAB)(16)U.S. District Court for the Eastern District of Texas, Marshall Division (Judge Rodney Gilstrap)(5)Court of Appeals for the Federal Circuit(3)lead counsel · counsel · back-up counsel
K&L Gates192342Texas Eastern District Court(15)Patent Trial and Appeal Board (PTAB)(9)U.S. District Court for the District of Delaware(3)counsel · Counsel · lead counsel
Knobbe, Martens, Olson & Bear232043Patent Trial and Appeal Board (PTAB)(21)U.S. District Court for the Northern District of California(6)U.S. District Court for the Central District of California(4)lead counsel · Counsel · counsel
The Stafford Davis Firm43—43Texas Eastern District Court(12)W.D. Tex.(9)U.S. District Court for the Western District of Texas(7)local counsel · Of Counsel · lead counsel
Cherry Johnson Siegmund James311243Texas Western District Court(21)Texas Northern District Court(2)U.S. Court of Appeals for the Federal Circuit(2)local counsel · counsel · Counsel
Reichman Jorgensen Lehman & Feldberg35944Texas Western District Court(8)U.S. District Court for the Eastern District of Texas, Marshall Division(8)Patent Trial and Appeal Board (PTAB)(6)lead counsel · counsel · of counsel
Kheyfits Belenky44—44W.D. Tex.(8)E.D. Tex.(7)S.D.N.Y.(7)lead counsel · of counsel · counsel
Kasowitz Benson Torres281745Texas Western District Court(15)Patent Trial and Appeal Board (PTAB)(6)Texas Eastern District Court(6)Counsel · lead counsel · counsel
Devlin Law Firm42446Texas Western District Court(8)D. Del. (Judge Noreika)(7)U.S. District Court for the District of Delaware(7)lead counsel · local counsel · counsel
Wilson Sonsini Goodrich & Rosati222547Patent Trial and Appeal Board (PTAB)(19)U.S. District Court for the District of Delaware(11)U.S. District Court for the Western District of Texas(3)lead counsel · of counsel · back-up counsel
Findlay Craft252247Texas Eastern District Court(19)U.S. District Court for the Eastern District of Texas, Marshall Division(7)Texas Western District Court(5)local counsel · Local Counsel · lead counsel
Caldwell Cassady & Curry371148U.S. District Court for the Southern District of Iowa(10)Texas Eastern District Court(9)Patent Trial and Appeal Board (PTAB)(8)Lead Counsel · lead counsel · Counsel
Mintz, Levin, Cohn, Ferris, Glovsky and Popeo292049Patent Trial and Appeal Board (PTAB)(20)Texas Western District Court(5)U.S. Court of Appeals for the Federal Circuit(4)of counsel · lead counsel · Lead Counsel
Fenwick & West44751U.S. District Court for the Western District of Texas(10)U.S. District Court for the Eastern District of Texas(9)Delaware District Court(8)lead counsel · of counsel · appellate counsel
Greenberg Traurig272451Patent Trial and Appeal Board (PTAB)(17)United States District Court for the District of Delaware(9)Texas Eastern District Court(7)Counsel · back-up counsel · lead counsel
Erise IP411051Patent Trial and Appeal Board (PTAB)(40)United States District Court for the Western District of Texas(5)U.S. District Court for the Northern District of Georgia(2)lead counsel · Lead Counsel · counsel
McAndrews, Held & Malloy292453USPTO Patent Trial and Appeal Board(16)Delaware District Court(9)Texas Eastern District Court(8)lead counsel · backup counsel · of counsel
Fabricant312253Patent Trial and Appeal Board (PTAB)(21)U.S. District Court for the Eastern District of Texas(19)U.S. District Court for the Western District of Texas(5)lead counsel · Counsel · Lead Counsel
Mayer Brown203353USPTO Patent Trial and Appeal Board(22)U.S. District Court for the Eastern District of Texas(10)U.S. District Court for the District of Delaware(4)counsel · lead counsel · back-up counsel
Goodwin Procter272754Patent Trial and Appeal Board (PTAB)(19)U.S. District Court for the Eastern District of Texas(7)Delaware District Court(6)lead counsel · counsel of record · Counsel