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 Hickman Palermo Truong BeckerBingham Wong LLP, Fluidigm Corporation, and Morgan, Lewis & Bockius LLP.

Top cities in California

All practitioners in California

Daniel D Ledesma

Reg. 57181

Patent attorney

Hickman Palermo Truong BeckerBingham Wong LLP

San Jose, CA · 95113

408-414-1229

Aric Wade Ledford

Reg. 63663

Patent agent

Fluidigm Corporation

South San Francisco, CA · 94080

650-243-6659

Roy LeDuc

Reg. 34620

Patent agent

San Francisco, CA · 94103

415-793-2358

Albert J. Lee

Reg. 61673

Patent attorney

Morgan, Lewis & Bockius LLP

Costa Mesa, CA · 92626-7653

714-830-0600

Albert S Lee

Reg. 55366

Patent attorney

Dali Wireless

Menlo Park, CA · 94025

855-250-5082

Alex Lee

Reg. 72950

Patent agent

Gunderson Dettmer

San Diego, CA · 92130

858-436-8057

Alexander S. Lee

Reg. 71257

Patent attorney

Los Angeles, CA · 90010-1211

310-347-8235

Alexander Hyung-Joon Lee

Reg. 62239

Patent attorney

White & Case LLP

Palo Alto, CA · 94306

650-213-0314

Andrew D Lee

Reg. 62005

Patent attorney

Precision Patents, P.C.

Irvine, CA · 92602

949-415-8455

Andrew C Lee

Reg. 68977

Patent attorney

HG LAW LLP

San Jose, CA · 95113

510-304-9211

Andrew J Lee

Reg. 60371

Patent attorney

Fountainhead Law Group, P.C.

Santa Clara, CA · 95050

408-244-6319

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 W Lee

Reg. 59112

Patent attorney

Mountain View, CA · 94040

650-468-0417

Brian H Lee

Reg. 53191

Patent attorney

San Jose, CA · 95126

408-246-6710

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 J. Lee

Reg. 71309

Patent attorney

Nicholson De Vos Webster & Elliott LLP

San Jose, CA · 95113

408-675-0441

Daniel Y. Lee

Reg. 71832

Patent attorney

Torrance, CA · 90502

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

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.