California

Patent attorneys in California

California hosts 9,553 active patent practitioners registered with the USPTO Office of Enrollment and Discipline. Patent attorneys and patent agents can both prepare and file patent applications, but only patent attorneys can also offer legal advice on prosecution strategy, freedom-to-operate analyses, and infringement opinions in California. Practitioners are concentrated across 20 cities, with the largest clusters in the metros listed below. Notable firms with multiple registered practitioners in the state include Polsinelli LLP, ReCor Medical, and Genomics Institute of the Novartis Research Foundation.

Top cities in California

All practitioners in California

Joshua L. Rayes

Reg. 74645

Patent attorney

Polsinelli LLP

San Francisco, CA · 94111

480-234-6681

Theresa Ann Raymer

Reg. 46941

Patent attorney

ReCor Medical

Palo Alto, CA · 94303

408-677-0169

Daniel E. Raymond

Reg. 53504

Patent agent

Genomics Institute of the Novartis Research Foundation

San Diego, CA · 92121

858-812-1617

Alan S Raynes

Reg. 39809

Patent attorney

Konrad, Raynes, Davda & Victor LLP

Los Angeles, CA · 90064-2333

310-556-7983

Ali S. Razai

Reg. 60771

Patent attorney

Knobbe, Martens, Olson & Bear LLP

Irvine, CA · 92614

949-760-0404

Haleh Razzaghi

Reg. 74062

Patent attorney

San Diego, CA · 92117

858-353-3835

Joseph Robert Re

Reg. 31291

Patent attorney

Knobbe Martens Olson and Bear

Irvine, CA · 92614

949-760-0404

Marty B Ready

Reg. 59702

Patent attorney

Wilson Elser Moskowitz Edelman & Dicker

San Diego, CA · 92101

619-962-1546

Robert Howard Reamey

Reg. 50371

Patent agent

Pacific Biosciences, Inc.

Menlo Park, CA · 94025

650-521-8242

Shannon Thomas Reaney

Reg. 52285

Patent attorney

Morrison and Foerster LLP

Palo Alto, CA · 94304

650-813-5600

Robin W Reasoner

Reg. 58257

Patent attorney

Quantcast Corporation

San Francisco, CA · 94103

415-872-4753

Abu Ahmed S Reaz

Reg. 74202

Patent agent

Park, Vaughan, Fleming & Dowler, LLP

Davis, CA · 95618

530-204-4049

William Louis Reber· Jr

Reg. 38045

Patent agent

William Reber LLC

Tustin, CA · 92782

949-932-0148

Shirley A Recipon

Reg. 47016

Patent agent

San Francisco, CA · 94116-1656

415-661-1743

Carolyn L Redding

Reg. 73854

Patent attorney

Menlo Park, CA · 94025

724-344-8689

Arvind R Reddy

Reg. 63007

Patent attorney

Artegis Law Group

Sunnyvale, CA · 94085

408-715-1265

Ashley Y. Reddy

Reg. 79127

Patent attorney

Newbury Park, CA · 91320

805-410-0279

Daphne L Reddy

Reg. 53507

Patent agent

Heller Ehrman White and McAuliffe LLP

Menlo Park, CA · 94025-3506

650-324-7037

G. Prabhakar Reddy

Reg. 47890

Patent attorney

Amgen, Inc.

Thousand Oaks, CA · 91320

805-447-3288

Sanjiva Kumjula Reddy

Reg. 70816

Patent agent

Hogan Lovells US LLP

San Francisco, CA · 94111

212-918-3209

Vikram M Reddy

Reg. 53508

Patent agent

Charles C.H. Wu & Associates, APC

Irvine, CA · 92618

949-251-0111

Samuel E Redford

Reg. 82482

Patent agent

Fearn Legal LLC

San Francisco, CA · 94114

605-413-6921

Babak Redjaian

Reg. 42096

Patent attorney

Irell and Manella, LLP

Newport Beach, CA · 92660

949-760-0991

Mary Jo Redman

Reg. 53921

Patent agent

Law Offices Of Calif Tervo

San Diego, CA · 92111

619-234-4034

Timothy J. Reece

Reg. 79735

Patent agent

Fisher Broyles, LLC

Los Angeles, CA · 90036

308-224-6435

Christopher A. Reed

Reg. 76577

Patent attorney

Soquel, CA · 95073

831-419-2200

Derrick William Reed

Reg. 40138

Patent attorney

St Jude Medical CRMD

Sylmar, CA · 91342

818-493-2200

Dianne Elaine Reed

Reg. 31292

Patent attorney

VLP Law Group LLP

Portola Valley, CA · 94028

650-446-3320

James Lawrence Reed

Reg. 43877

Patent attorney

Squire Patton Boggs

San Francisco, CA · 94111

415-954-0314

Matthew Robert Reed

Reg. 48879

Patent attorney

Wilson Sonsini Goodrich and Rosati PC

Palo Alto, CA · 94304

650-565-3990

Common questions

Do I need a patent attorney based in California?

No. Every USPTO-registered patent practitioner is licensed to file applications on behalf of inventors in any state, regardless of where the practitioner's office is. Choosing a California-based practitioner can simplify in-person inventor signings, local meetings, and same-time-zone calls, but it is not a legal requirement.

How many patent attorneys are licensed in California?

9,553 active USPTO-registered patent practitioners list a California office address on the OEDCI roster. This includes both patent attorneys (who can also offer legal advice) and patent agents (who can prepare and file patents but not offer broader legal advice).

What is the difference between a patent attorney and a patent agent?

Both pass the USPTO Patent Bar and can prepare, file, and prosecute patent applications. Only patent attorneys also hold a state bar license, meaning they can additionally offer legal advice on infringement, licensing, and litigation strategy. Patent agents tend to charge less per hour and are common at large in-house IP departments.