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
Klarquist Sparkman246Patent Trial and Appeal Board (PTAB) of the USPTO(3)Texas Eastern District Court(2)U.S. District Court for the Western District of Washington(1)lead counsel · counsel · of counsel
Hogan Lovells US246Patent Trial and Appeal Board (PTAB)(2)Texas(1)U.S. District Court for the Eastern District of Texas(1)Counsel · Attorney for Defendant · Lead Counsel
Key Kesan Dallmann6—6U.S. District Court for the Eastern District of Texas(3)U.S. District Court for the Western District of Texas(3)Lead Counsel · lead or primary counsel · Counsel
Reinhart Boerner Van Deuren156Wisconsin Eastern District Court(6)local counsel · Counsel · counsel
Miller Johnson336Patent Trial and Appeal Board (PTAB)(3)Michigan Western District Court(2)United States District Court for the Western District of Michigan, Southern Division(1)Counsel · Lead Counsel · Attorney
Kellogg, Hansen, Todd, Figel & Frederick516U.S. District Court for the Northern District of West Virginia(3)U.S. International Trade Commission(2)Texas Eastern District Court(1)lead counsel · counsel · Counsel
BakerHostetler426Delaware District Court(2)Delaware Supreme Court(1)Patent Trial and Appeal Board (PTAB)(1)Counsel · Counsel (argued) · Local Counsel
Padmanabhan & Dawson156Patent Trial and Appeal Board (PTAB)(5)Delaware District Court(1)Counsel · lead counsel · Lead Counsel
Cozen O'Connor516Patent Trial and Appeal Board (PTAB)(2)United States District Court for the Western District of Texas(2)California Central District Court(1)lead counsel · Counsel for Plaintiff · Counsel
Fredrikson & Byron336Patent Trial and Appeal Board (PTAB)(2)United States Judicial Panel on Multidistrict Litigation, centralized in the Southern District of Iowa.(2)Minnesota District Court(1)Counsel · counsel · local counsel
Miller Barondess246U.S. District Court for the Central District of California(6)Lead Counsel · lead counsel · Counsel for Defendants
Lex Lumina336U.S. Court of Appeals for the Federal Circuit (CAFC)(2)U.S. Patent Trial and Appeal Board (PTAB)(2)Northern District of California(1)Counsel · Lead Counsel (for appeal) · Lead Counsel
Noroozi426U.S. Court of Appeals for the Federal Circuit (CAFC)(3)California Northern District Court(1)Patent Trial and Appeal Board (PTAB)(1)lead counsel · 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