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.

1447 firms · 10690 total appearances across 3636 cases with counsel data.

FirmPlaintiffDefendantTotalTop courtsTop roles
Michael Best & Friedrich145Arizona District Court(2)Indiana Southern District Court(1)U.S. Court of Appeals for the Federal Circuit(1)briefing counsel · lead counsel · appellate counsel
Young, Garcia & Quadrozzi415U.S. District Court for the Eastern District of Michigan (Detroit); originally E.D. Tenn.(4)Court of Appeals for the Federal Circuit(1)local counsel
Bartko, Zankel, Bunzel & Miller224U.S. District Court for the Northern District of California(4)local counsel · team member · lead local counsel
Dontzin Nagy & Fleissig—44Patent Trial and Appeal Board (PTAB)(2)United States Court of Appeals for the Federal Circuit(1)United States District Court for the Southern District of New York(1)local counsel · associate · lead trial counsel
Fried, Frank, Harris, Shriver & Jacobson224Patent Trial and Appeal Board(2)U.S. District Court for the Eastern District of Texas(1)lead counsel · back-up counsel
Ellenoff Grossman & Schole314D. Delaware(1)U.S. Court of Appeals for the Federal Circuit(1)USPTO Patent Trial and Appeal Board(1)pro hac vice · backup counsel · back-up counsel (patent owner)
Harrigan Leyh Farmer & Thomsen4—4U.S. District Court, W.D. Texas (Waco Division) — Judge Alan D. Albright(1)U.S. District Court, Western District of Washington(1)U.S. District Court, Western District of Washington (Seattle Division)(1)local counsel · former local counsel
The Glennon Law Firm4—4U.S. District Court for the Western District of New York(3)W.D.N.Y.(1)local counsel
Stoll Keenon Ogden—44Patent Trial and Appeal Board (PTAB)(1)U.S. District Court for the Eastern District of Kentucky(1)U.S. District Court, E.D. Ky. (Lexington Division)(1)local counsel
Porter Hedges134Western District of Texas(2)Patent Trial and Appeal Board(1)local counsel · outside counsel of record
Ward & Smith4—4United States District Court for the Eastern District of Texas(3)Patent Trial and Appeal Board (PTAB)(1)local counsel · lead counsel
Foley Hoag—44Patent Trial and Appeal Board (PTAB)(3)U.S. District Court for the District of Massachusetts(1)Lead Counsel · Back-up Counsel · Backup Counsel
RuyakCherian314Court of Appeals for the Federal Circuit(2)Patent Trial and Appeal Board (PTAB)(1)U.S. District Court for the Eastern District of Texas(1)Counsel · counsel · plaintiff's counsel
Duane Morris & Selvam134Patent Trial and Appeal Board (PTAB)(2)International Trade Commission (ITC)(1)U.S. District Court, Central District of California(1)Lead Counsel · Chairman · Director
Ballard Spahr134Texas Western District Court(3)Texas Eastern District Court(1)Counsel · defense counsel · Associate Counsel
Ciccarelli Law Firm314Texas Western District Court(2)U.S. District Court for the Eastern District of Virginia(1)U.S. District Court for the Western District of Texas, Waco Division(1)local counsel · Counsel
Gemini Law134U.S. District Court for the District of Delaware(2)District of New Jersey(1)Patent Trial and Appeal Board (PTAB)(1)lead counsel · trial counsel · counsel
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
Weintraub Tobin134Patent Trial and Appeal Board (PTAB)(3)California Central District Court(1)lead counsel · back-up counsel · of counsel
Davidson Berquist Jackson & Gowdey224U.S. District Court for the Northern District of Georgia(2)Patent Trial and Appeal Board (PTAB)(1)U.S. District Court for the Eastern District of Texas, Tyler Division(1)of counsel · outside counsel · attorney of record