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 Morgan, Lewis & Bockius LLP, Nestlabs, Inc., and Seyfarth Shaw LLP.

Top cities in California

All practitioners in California

Shubha Luthra

Reg. L1244

Limited recognition

San Ramon, CA · 94583

612-605-7773

Richard J Lutton· Jr

Reg. 39756

Patent attorney

Nestlabs, Inc.

Palo Alto, CA · 94304

650-823-0698

Joseph Lutz

Reg. 43765

Patent attorney

Seyfarth Shaw LLP

Los Angeles, CA · 90067-3021

310-201-1545

Truc M Luu

Reg. 54287

Patent attorney

Ropers Majeski Kohn Bentley

Los Angeles, CA · 90071

213-312-2002

Matthew S Luxton

Reg. 41960

Patent attorney

General Dynamics NASSCO

San Diego, CA · 92186

619--54-4-8700

Robert Luzzi

Reg. 70076

Patent agent

Pleasanton, CA · 94588

603-502-3924

Jacqueline R Lyandres

Reg. 68165

Patent attorney

Wilson Sonsini Goodrich & Rosati

Palo Alto, CA · 94304

650-493-9300

Ron M Lycan

Reg. 50779

Patent agent

Procopio Cory Hargreaves and Savitch LLP

San Diego, CA · 92101

619-238-1900

Nicholas D. Lyford

Reg. 70686

Patent agent

Velo3d, Inc.

Campbell, CA · 95008

408-610-3915

Christopher L. Lyle

Reg. 71859

Patent attorney

Canon U.S.A., Inc.

Irvine, CA · 92612

949-932-3109

Christopher D Lynch

Reg. 68915

Patent agent

Orrick, Herrington & Sutcliffe LLP

Los Angeles, CA · 90071

213-612-2318

Cindy A Lynch

Reg. 38699

Patent attorney

Cindy A. Lynch

Belmont, CA · 94002

650-703-1490

Connor Thomas Lynch

Reg. 77393

Patent agent

Lynch, LLP

Los Angeles, CA · 90026

949-229-3141

Jamison E Lynch

Reg. 41168

Patent agent

Gilead Sciences, Inc.

Foster City, CA · 94404

650-372-4402

Matthew Patrick Lynch

Reg. 22357

Patent attorney

Winnetka, CA · 91306

818-898-0020

Morgan T. Lynch

Reg. 81008

Patent agent

Agoura Hills, CA · 91301

818-235-8945

Sean M. Lynch

Reg. 75248

Patent attorney

Lynch LLP

Los Angeles, CA · 90027

949-829-2186

John Hubert Lynn

Reg. 29235

Patent attorney

Lynn & Lynn

Irvine, CA · 92612

949-786-2372

Rebecca A Lynn

Reg. 55412

Patent agent

San Francisco, CA · 94129

415-422-0747

Katrina A Lyon

Reg. 42821

Patent attorney

Naval Surface Warfare Center, Port Hueneme Division

Port Hueneme, CA · 93043

805-469-5686

Richard T Lyon· Jr

Reg. 37385

Patent attorney

Lyon and Harr LLP

Camarillo, CA · 93010

805-384-6435

Richard Edgar Lyon· Jr

Reg. 26300

Patent attorney

Holland and Knight LLP

Los Angeles, CA · 90071

213-896-2510

Robert Edward Lyon

Reg. 24171

Patent attorney

Robert E. Lyon, Attorney at Law

Los Angeles, CA · 90017

213-622-7208

Adrian R. Lyons

Reg. 81898

Patent attorney

San Diego, CA · 92109

760-563-2621

Michael J Lyons

Reg. 37386

Patent attorney

Morgan, Lewis & Bockius LLP

Palo Alto, CA · 94304

650-843-7507

Shirly N Lyubomirsky

Reg. 40233

Patent attorney

The Patent Law Office of

Pleasanton, CA · 94588

925-223-7944

Dennis H Ma

Reg. 46890

Patent attorney

State of California Superior Court, County of Orange

Santa Ana, CA · 92701

657-622-7076

Jerome Ma

Reg. 71833

Patent attorney

Tensegrity Law Group LLP

Redwood Shores, CA · 94065

650-802-6022

Jerry Z. Ma

Reg. 79174

Patent attorney

Perplexity AI

San Francisco, CA · 94104

510-270-0840

Kun Ma

Reg. 73846

Patent agent

Morgan, Lewis & Bockius LLP

San Francisco, CA · 94105-1596

415-442-1000

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.