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 NGM Biopharmaceuticals, Inc., Mai Pare, ESQ, and Wilson Sonsini Goodrich and Rosati.

Top cities in California

All practitioners in California

Peter Paras· Jr

Reg. 56136

Patent agent

San Francisco, CA · 94131

415-753-3921

Deepak K. Parashar

Reg. 63948

Patent attorney

Hermosa Beach, CA · 90254

206-234-9372

Camran V. Parast

Reg. 76106

Patent agent

Pacifica, CA · 94044

650-303-3527

Diane Pardi

Reg. 56824

Patent agent

NGM Biopharmaceuticals, Inc.

South San Francisco, CA · 94080

650-243-5569

Mai N Pare

Reg. 49001

Patent attorney

Mai Pare, ESQ

Long Beach, CA · 90814

323-459-7139

Ketan S Parekh

Reg. 46979

Patent attorney

Wilson Sonsini Goodrich and Rosati

Palo Alto, CA · 94304

650-493-9300

Shyam K Parekh

Reg. 62767

Patent agent

Qualcomm Incorporated

San Diego, CA · 92121

858-658-5773

Annette Suzanne Parent

Reg. 42058

Patent attorney

Chan Zuckerberg Biohub

San Francisco, CA · 94158

925-323-3981

Anthony M Parenti

Reg. 78401

Patent agent

Morrison and Foerster

San Francisco, CA · 94105

831-345-7973

Isaac O Parham

Reg. 75155

Patent attorney

Foster City, CA · 94404

360-961-8290

Arjay Parhar

Reg. 79804

Patent attorney

Saratoga, CA · 95070

408-834-0921

Dakshesh D. Parikh

Reg. 84296

Patent agent

San Jose, CA · 95135

408-590-1797

Andrew S Park

Reg. 47841

Patent agent

Park, Kim & Suh, LLC

Los Angeles, CA · 90067

310-407-5445

Arvin R. Park

Reg. 41241

Patent attorney

Park, Vaughan & Fleming, LLP

Davis, CA · 95616

530-759-1661

Byungjoo Park

Reg. 78312

Patent agent

VISALIA, CA · 93291

626-460-0328

Chanmin Park

Reg. 62247

Patent agent

Silicon Valley USPTO

San Jose, CA · 95112

408-918-7555

Chung S Park

Reg. 52093

Patent attorney

Patent Office of Dr. Chung S. Park

sunnyvale, CA · 94088-2312

408--71-8-0512

Daniel Seikon Park

Reg. 44280

Patent agent

Encino, CA · 91436

949-230-6153

David Sangchoon Park

Reg. 52094

Patent attorney

Walnut, CA · 91789

Ethan Y. Park

Reg. 76305

Patent attorney

Samsung Semiconductor, Inc.

San Jose, CA · 95134

408-544-4000

Eun S Park

Reg. 70702

Patent agent

JIP International, Inc.

Saratoga, CA · 95070

408-482-2321

Freddie K Park

Reg. 35636

Patent attorney

Los Altos, CA · 94024

650-575-7927

J.C. Park

Reg. 82748

Patent attorney

Sunnyvale, CA · 94085

650-609-8522

Jae H. Park

Reg. 66077

Patent agent

Intel Corporation

Santa Clara, CA · 95054

408-420-0429

Jeonghwan Park

Reg. 79701

Patent attorney

Broadview IP LAW, PC

Irvine, CA · 92602

949-232-0721

John Kahn Park

Reg. 37904

Patent attorney

Park Law Firm

Los Angeles, CA · 90010

213-389-3777

Jong Andrew Hyuk Park

Reg. 56917

Patent agent

Van Pelt, Yi & James LLP

Cupertino, CA · 95014

408-973-2577

Keum J Park

Reg. 42059

Patent attorney

Voyage Foods, Inc.

Oakland, CA · 94607

707-400-0627

Kyung R Park

Reg. 74619

Patent agent

Wilson Sonsini Goodrich & Rosati P.C.

Palo Alto, CA · 94304-1050

650-849-3028

Michelle E Park

Reg. 62804

Patent attorney

Groq, Inc.

Mountain View, CA · 94041

415-547-0413

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.