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
Osborn Maledon224Arizona District Court(3)local counsel · Local Counsel
Kroub, Silbersher & Kolmykov224PTAB(2)Texas Western District Court(1)U.S. District Court for the Eastern District of Texas(1)Partner · Counsel for Patent Owner · Counsel of Record
Weintraub Tobin Chediak Coleman Grodin314California Northern District Court(2)Patent Trial and Appeal Board (PTAB)(1)United States District Court, Northern District of California, San Jose Division(1)counsel · lead counsel · Attorney for Plaintiff
Willkie Farr & Gallagher224California Central District Court(1)District of New Jersey(1)Ohio Southern District Court(1)lead counsel · of counsel · Lead Counsel
Hatch Law134California Northern District Court(2)California Central District Court(1)United States District Court, District of Nevada(1)counsel · Counsel
Dentons US134Texas Eastern District Court(3)Lead Counsel · Partner · Local Counsel
Altima Advisors Attorneys314United States District Court for the Western District of Texas(3)Patent Trial and Appeal Board (PTAB)(1)Lead Counsel · Attorney · Attorney of record
Clement & Murphy4—4U.S. Court of Appeals for the Federal Circuit(2)U.S. District Court for the Eastern District of Virginia, Norfolk Division(1)United States District Court for the Eastern District of Virginia; U.S. Court of Appeals for the Federal Circuit (CAFC).(1)appellate counsel · Of Counsel · Appellate Counsel
PV Law224Patent Trial and Appeal Board (PTAB)(2)Texas Eastern District Court(2)of counsel · lead counsel · Founding Partner, Counsel of Record
Ortiz & Lopez4—4Illinois Northern District Court(2)California Northern District Court(1)Texas Eastern District Court(1)lead counsel
Michael Best & Friedrich145Arizona District Court(2)Patent Trial and Appeal Board (PTAB)(2)Indiana Southern District Court(1)Counsel · Local Counsel · lead counsel
Slayden Grubert Beard145U.S. District Court for the Western District of Texas(2)Texas(1)U.S. District Court for the Eastern District of Texas(1)local counsel · Counsel · Local Counsel
Arnold & Porter235U.S. District Court for the Eastern District of Texas(2)New York Southern District Court(1)Patent Trial and Appeal Board (PTAB)(1)counsel · Of Counsel / Additional Counsel · Lead Counsel
Cherian415Court of Appeals for the Federal Circuit(2)U.S. District Court for the Eastern District of Texas(2)Patent Trial and Appeal Board(1)Counsel of Record · lead counsel · Of Counsel
Davis Polk & Wardwell235PTAB(2)U.S. District Court for the District of Delaware(2)U.S. District Court for the Eastern District of Texas(1)lead counsel · appellate counsel · Lead Counsel
Dorsey & Whitney145Patent Trial and Appeal Board(1)U.S. District Court for the District of Delaware(1)U.S. District Court for the Eastern District of Texas(1)Counsel · of counsel · lead counsel
Patterson Belknap Webb & Tyler325U.S. District Court for the District of Delaware(3)Patent Trial and Appeal Board (PTAB)(1)U.S. District Court for the Western District of Texas(1)lead counsel · Lead Counsel · Counsel
Morrison Foerster235Texas Western District Court(2)U.S. District Court for the District of Delaware(1)U.S. District Court for the Eastern District of Texas(1)Partner · lead counsel · partner
Cherian Harkins Dunham325Texas Eastern District Court(2)Court of Appeals for the Federal Circuit(1)Florida Southern District Court(1)Lead Counsel · Counsel · Of Counsel
Pillsbury Winthrop Shaw Pittman145U.S. District Court for the Southern District of California(2)Florida Northern District Court(1)U.S. District Court for the Eastern District of New York(1)lead counsel · counsel · Attorney for Defendant
Shore Chan DePumpo5—5U.S. District Court for the Eastern District of Texas(2)Texas Western District Court(1)U.S. District Court for the District of Delaware(1)local counsel · lead counsel · counsel
Dovel & Luner5—5Texas Eastern District Court(2)U.S. District Court for the Central District of California(1)U.S. District Court for the District of Delaware(1)Of Counsel · Lead Counsel · lead counsel
AddyHart415Patent Trial and Appeal Board (PTAB)(1)U.S. District Court for the Central District of California(1)U.S. District Court for the Eastern District of Virginia(1)lead counsel · Lead Counsel · of counsel
Fabricant, Rubino & Lambrianakos415U.S. District Court for the Eastern District of Texas(3)U.S. District Court for the Western District of Texas(1)U.S. Patent and Trademark Office, Patent Trial and Appeal Board (PTAB)(1)Counsel · lead counsel · counsel
Nyemaster Goode5—5U.S. District Court for the Southern District of Iowa(2)U.S. District Court for the District of Arizona(1)U.S. District Court for the District of Utah(1)Local Counsel · lead counsel · local counsel