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.

1465 firms · 10858 total appearances across 3709 cases with counsel data.

FirmPlaintiffDefendantTotalTop courtsTop roles
Ortiz & Lopez3—3California Northern District Court(1)Illinois Northern District Court(1)Texas Eastern District Court(1)lead counsel
Phillips, Goldman, McLaughlin & Hall—33U.S. District Court, District of Delaware(2)U.S. District Court, Northern District of California(1)local counsel · counsel of record · Delaware counsel
Barcelo, Harrison & Walker213Patent Trial and Appeal Board (PTAB)(1)U.S. District Court for the Western District of Texas(1)U.S. District Court for the Western District of Texas, Midland-Odessa Division(1)backup counsel · PHV counsel
Calfee, Halter & Griswold123Patent Trial and Appeal Board, U.S. Patent and Trademark Office(1)U.S. District Court for the Northern District of Ohio(1)U.S. District Court, Northern District of California (San Jose Division)(1)local counsel · co-counsel
Carter Arnett Bennett & Perez123Patent Trial and Appeal Board, U.S. Patent and Trademark Office(3)back-up counsel · lead counsel · former lead counsel
Archer & Greiner—33U.S. District Court for the District of Utah(2)U.S. District Court, District of New Jersey (Camden Vicinage)(1)local counsel · former local counsel
Crewse Law Firm3—3N.D. Tex.(2)U.S. District Court for the Northern District of Texas(1)local counsel
Silverman, McDonald & Friedman3—3D. Del.(2)D. Del. (Judge Barker)(1)local counsel
Troutman Sanders123Patent Trial and Appeal Board (PTAB)(1)U.S. District Court for the District of Maryland(1)U.S. District Court, Eastern District of California (Sacramento)(1)local counsel · counsel · IP litigation lead
Nelson Bumgardner3—3United States District Court for the Southern District of New York(1)W.D. Tex.(1)W.D. Tex. (Waco), Judge Alan D. Albright(1)of counsel · lead counsel · back-up PTAB counsel
Mrejen Blinderman3—3U.S. District Court for the Southern District of Florida(3)lead counsel
Quinn Emanuel123Patent Trial and Appeal Board, U.S. Patent and Trademark Office(1)U.S. District Court for the Central District of California(1)counsel · team member · lead trial counsel
Mauriel Kapouytian Woods213U.S. District Court for the District of Delaware(1)USPTO Patent Trial and Appeal Board (inter partes review)(1)of counsel · back-up counsel · lead trial counsel
Medlen & Carroll—33U.S. Court of Appeals for the Federal Circuit(1)U.S. District Court for the Northern District of California(1)of counsel · lead counsel
Hill Wallack—33U.S. District Court for the District of New Jersey(3)local counsel · lead counsel · core patent/ANDA counsel
Bickel & Brewer—33U.S. District Court for the District of Oregon(2)U.S. International Trade Commission(1)named counsel · trial counsel · of counsel
Freitas Angell & Weinberg3—3C.D. Cal.(2)U.S. District Court for the Central District of California (Judge James V. Selna)(1)lead counsel · of counsel · lead trial counsel
The Chong Law Firm4—4Texas Eastern District Court(2)U.S. District Court for the District of Delaware(2)local counsel · counsel · of counsel
The Zimmerman Firm224Texas Eastern District Court(2)Patent Trial and Appeal Board(1)Texas Western District Court(1)lead counsel · Lead Counsel · Counsel
Gray Reed & McGraw224Texas Eastern District Court(4)counsel · lead counsel · local counsel