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 Electronic Arts INC, Sung Jin Lee, and Wilson Sonsini Goodrich & Rosati.

Top cities in California

All practitioners in California

Suk S Lee

Reg. 47745

Patent attorney

Electronic Arts INC

Redwood City, CA · 94065

650-628-1500

Sung J Lee

Reg. 59030

Patent agent

Sung Jin Lee

Fremont, CA · 94536

714-213-5283

Sungsoo Lee

Reg. 77635

Patent agent

Wilson Sonsini Goodrich & Rosati

Palo Alto, CA · 94304

650-849-3286

Svetlana L Lee

Reg. 51933

Patent agent

Alameda, CA · 94501

510-865-1870

Theodore S. Lee

Reg. 70679

Patent attorney

San Gabriel, CA · 91775

626-400-6680

Tia S. Lee

Reg. 83376

Patent agent

Weaver Austin Villeneuve & Sampson LLP

Oakland, CA · 94607

510-663-1100

Timmy C H Lee

Reg. 79856

Patent agent

Morgan, Lewis & Bockius LLP

Palo Alto, CA · 94304

650-843-7517

Timothy L Lee

Reg. 58516

Patent agent

The Walt Disney Company

Burbank, CA · 91521

818-560-6609

Tong-Jyh Lee

Reg. 48582

Patent attorney

Tong J. Lee

Hermosa Beach, CA · 90254

310-245-5005

Tonny Lee

Reg. 66896

Patent attorney

Redwood Shores, CA · 94065

650-802-3175

Victor K Lee

Reg. 35750

Patent attorney

Millbrae, CA · 94030

650-866-3061

Wei-Chi Lee

Reg. 82010

Patent attorney

San Jose, CA · 95117

510-570-9979

Wendy M Lee

Reg. 40378

Patent agent

Genentech

South San Francisco, CA · 94080

650-225-1994

Yoojin Lee

Reg. 72723

Patent agent

Great Lawn Analytics, LLC

Irvine, CA · 92618

805-300-7053

Youngil Lee

Reg. 80185

Patent agent

ACI Law Group, PC

La Palma, CA · 90623

714-522-3300

Alice Lee-Dutra

Reg. 70073

Patent agent

Foley & Lardner, LLP

San Diego, CA · 92130

858-847-6700

Kenneth Edward Leeds

Reg. 30566

Patent attorney

Sunnyvale, CA · 94087

408-732-9500

Brian F Leege

Reg. 64901

Patent attorney

Nicholson De Vos Webster & Elliott, LLP

San Jose, CA · 95113

408-664-9267

John R Leflar

Reg. 39744

Patent agent

Sunnyvale, CA · 94087

408-735-8172

Corey T Leggett

Reg. 70017

Patent agent

Nixon Peabody LLP

San Francisco, CA · 94111

415-984-8340

Miyana Leggett

Reg. 902609

Limited recognition

University of San Francisco School of Law

San Francisco, CA · 94117-1080

510-828-5258

Ji Lei

Reg. 65322

Patent attorney

Power Integrations, Inc.

San Jose, CA · 95138

408-414-8549

Leong Chi Lei

Reg. 50402

Patent agent

A and J Intrntl Patent Office

Walnut Creek, CA · 94598

480-561-4607

Yi-Shu V. Lei

Reg. 71496

Patent attorney

Gibson Dunn & Crutcher, LLP

Palo Alto, CA · 94304

650-815-2600

James D Leimbach

Reg. 34374

Patent agent

Leimbach Assoctiates

San Diego, CA · 92117

858-483-8761

Justin J Leisey

Reg. 65082

Patent attorney

Abbott Vascular Inc,

Santa Clara, CA · 95054

408-239-3004

Theodore James Leitereg

Reg. 28319

Patent attorney

Temecula, CA · 92591-7936

602-369-1751

Rachel V Leiterman

Reg. 46868

Patent attorney

Patent Law Group LLP

Mountain View, CA · 94043

650-965-8005

Cody R. LeJeune

Reg. 57671

Patent attorney

Lerach Coughlin et al, LLP

San Diego, CA · 92101

619-231-1058

Christian M. C. Lek

Reg. 76369

Patent attorney

Los Angeles, CA · 90031

909-961-9988

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.