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.

1449 firms · 10650 total appearances across 3618 cases with counsel data.

FirmPlaintiffDefendantTotalTop courtsTop roles
Daignault Iyer181634Patent Trial and Appeal Board (PTAB)(13)Virginia Eastern District Court(5)Delaware District Court(4)of counsel · lead counsel · Counsel
Covington & Burling141832Texas Eastern District Court(14)Patent Trial and Appeal Board (PTAB)(7)U.S. District Court for the District of Delaware(4)Counsel · lead counsel · Lead Counsel
Williams & Connolly25732U.S. District Court for the District of Delaware(13)New Jersey District Court(5)U.S. Patent Trial and Appeal Board(5)counsel · lead counsel · Lead Counsel
Bunsow De Mory221032U.S. District Court for the Eastern District of Texas(9)Patent Trial and Appeal Board (PTAB)(7)Delaware District Court(4)lead counsel · Counsel · Lead Counsel
Robins Kaplan181331Patent Trial and Appeal Board (PTAB)(11)Texas Eastern District Court(7)U.S. District Court, Central District of California(4)counsel · lead counsel · pro hac vice
Banner & Witcoff161531Patent Trial and Appeal Board (PTAB)(16)U.S. Court of Appeals for the Federal Circuit(3)U.S. District Court for the District of Massachusetts(2)back-up counsel · backup counsel · appellate counsel
McDermott Will & Emery131831U.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 · Lead Counsel · appellate counsel
King & Spalding181230U.S. Patent and Trademark Office, Patent Trial and Appeal Board(9)U.S. District Court for the Eastern District of Texas, Marshall Division(4)U.S. Court of Appeals for the Federal Circuit(3)trial counsel · lead counsel · counsel of record
Brooks Kushman102030Patent Trial and Appeal Board (PTAB)(12)Delaware District Court(3)Tennessee Eastern District Court(2)Counsel · lead counsel · of counsel
Berger & Hipskind26430Eastern District of Texas(14)U.S. District Court for the Western District of Texas(3)Eastern District of Texas (E.D. Tex.)(2)lead counsel · Lead Counsel · Counsel
Garteiser Honea30—30Texas Eastern District Court(23)U.S. District Court for the Western District of Texas(4)California Northern District Court(2)lead counsel · Counsel · Lead Counsel
Skiermont Derby141529Patent Trial and Appeal Board (PTAB)(8)District of Delaware(4)U.S. District Court for the Western District of Texas, Waco Division(4)counsel · lead counsel · Counsel
Venable111829U.S. District Court for the District of New Jersey(5)USPTO Patent Trial and Appeal Board(5)U.S. District Court for the Eastern District of Texas(3)lead counsel · Lead Counsel · Of Counsel
Ziolkowski Patent Solutions Group171128Wisconsin Eastern District Court(11)Patent Trial and Appeal Board (PTAB)(7)U.S. District Court for the Central District of California(3)Counsel · Lead Counsel · lead counsel
Walsh Pizzi O'Reilly Falanga22628New Jersey District Court(17)Patent Trial and Appeal Board (PTAB)(4)U.S. Court of Appeals for the Federal Circuit(1)local counsel · Local Counsel · Counsel
Nixon Peabody111728Patent Trial and Appeal Board (PTAB)(8)U.S. District Court for the Eastern District of Texas, Marshall Division(4)U.S. District Court for the District of Delaware(3)Counsel · lead counsel · counsel
Husch Blackwell121426Wisconsin Eastern District Court(11)California Central District Court(5)Patent Trial and Appeal Board (PTAB)(3)Counsel · counsel · lead counsel
Polsinelli121426Patent Trial and Appeal Board (PTAB)(10)Texas Eastern District Court(5)U.S. District Court for the Western District of Texas(2)Lead Counsel · lead counsel · backup counsel
Mann | Tindel | Thompson121426Texas Eastern District Court(13)U.S. District Court for the Western District of Texas(5)Patent Trial and Appeal Board (PTAB)(4)local counsel · lead counsel · Local Counsel
Arnold & Porter Kaye Scholer81725Patent Trial and Appeal Board (PTAB)(9)United States District Court for the Western District of Texas(3)California Northern District Court(2)Counsel · lead counsel · back-up counsel