California

Patent attorneys in California

California hosts 9,567 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 The Clorox Company, JCIP Global, Inc., and Airbnb, Inc..

Top cities in California

All practitioners in California

Ann M Lee

Reg. 47741

Patent attorney

The Clorox Company

Oakland, CA · 94612

510-271-3136

Annie A Lee

Reg. 75361

Patent attorney

San Francisco, CA · 94111

408-455-8808

Anthony Lee

Reg. 70047

Patent attorney

Los Angeles, CA · 90034

714-624-2427

Belinda Y Lee

Reg. 46863

Patent agent

JCIP Global, Inc.

Irvine, CA · 92618

949-396-0800

Benjamin S Lee

Reg. 42787

Patent attorney

Airbnb, Inc.

San Francisco, CA · 94103

415-685-4812

Bernard C Lee

Reg. 67994

Patent attorney

CHAMBERS & LEE LLP

Los Angeles, CA · 90066

310-566-7271

Brian H Lee

Reg. 53191

Patent attorney

San Jose, CA · 95126

408-246-6710

Brian W Lee

Reg. 59112

Patent attorney

Mountain View, CA · 94040

650-468-0417

Byoung Taek Lee

Reg. 76430

Patent agent

East West Law Group

Los Angeles, CA · 90017

213-387-3630

Cheng Chien Lee

Reg. 48201

Patent attorney

The Law Offices Of Cheng C Lee

Marina Del Rey, CA · 90292

310-578-6190

Christopher C. Lee

Reg. 74966

Patent attorney

Pacific Law Group LLP

San Jose, CA · 95112

408-573-8585

Cynthia S. Y. Lee

Reg. 74937

Patent agent

Santa Clara, CA · 95051

559-978-6886

Daniel Y. Lee

Reg. 71832

Patent attorney

Torrance, CA · 90502

Daniel J. Lee

Reg. 71309

Patent attorney

Nicholson De Vos Webster & Elliott LLP

San Jose, CA · 95113

408-675-0441

David F. Lee

Reg. 60474

Patent attorney

Martine, Penilla & Gencarella, LLP

Sunnyvale, CA · 94085

408-749-6900

David C Lee

Reg. 73743

Patent agent

DH ASSOCIATES

SAN JOSE, CA · 95131

408-886-4780

David Y. Lee

Reg. 64109

Patent agent

Saratoga, CA · 95070

650-305-1048

Dennis Y Lee

Reg. 39508

Patent attorney

Sunnyvale, CA · 94087

Dennis E. Lee

Reg. 61975

Patent attorney

Los Angeles, CA · 90025

310-479-0551

Doris Lee

Reg. 77321

Patent agent

Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.

San Diego, CA · 92130

858-314-1545

Edmund Ming-yin Lee

Reg. 62577

Patent attorney

Vallejo, CA · 94591

707-643-3858

Edward Lee

Reg. 72785

Patent attorney

San Jose, CA · 95134

Elaine Kim Lee

Reg. 57613

Patent attorney

Patent and Innovations Strategies Group

Palo Alto, CA · 94304-1050

650-845-5064

Elaine K Lee

Reg. 41936

Patent attorney

Mauriel Kapouytian Woods LLP

San Francisco, CA · 94111

415-738-6391

Elbert L. Lee

Reg. 71495

Patent agent

San Jose, CA · 95118

408-500-8588

Eric J. Lee

Reg. 76828

Patent attorney

Gilead Sciences, Inc.

Foster City, CA · 94404

650-425-2744

Eric G. Lee

Reg. 59746

Patent attorney

Roche Molecular Systems, Inc.

Pleasanton, CA · 94588

925-251-6729

Erik S. Lee

Reg. 76693

Patent agent

Arcadia, CA · 91007

626-679-5555

Ethan Y Lee

Reg. 68561

Patent attorney

Fenwick & West LLP

Mountain View, CA · 94041

650-335-7241

Eunice Yoojin Lee

Reg. 74217

Patent agent

Amgen

Thousand Oaks, CA · 91320

516-729-6604

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?

9,567 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.