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 Knobbe, Martens, Olson & Bear, LLP, Beckman Coulter, and Xperi.

Top cities in California

All practitioners in California

William D Beard

Reg. 48888

Patent attorney

Granite Bay, CA · 95746

916-412-4061

Harper L Beasley

Reg. 81554

Patent attorney

Knobbe, Martens, Olson & Bear, LLP

Irvine, CA · 92614

858-707-4014

Geoffrey R Beatty

Reg. 59993

Patent attorney

Beckman Coulter

Brea, CA · 92821

714-961-6328

Sergio D. Becerra

Reg. 75908

Patent agent

Santa Monica, CA · 90401

815-764-9589

Michael J Beck

Reg. 40907

Patent attorney

San Mateo, CA · 94403

650-570-6680

Kyle A. Beckemeyer

Reg. 72838

Patent attorney

Xperi

San Jose, CA · 95134

773-599-2314

Daniel M Becker

Reg. 38376

Patent attorney

Fenwick & West, LLP

Mountain View, CA · 94041

650-988-8500

Edward A Becker

Reg. 37777

Patent attorney

Hickman Palermo Truong Becker Bingham Wong LLP

San Jose, CA · 95113

408-414-1204

Jordan Michael Becker

Reg. 39602

Patent attorney

Van Hoven PC

San Ramon, CA · 94583

650-246-0982

Kristin L Becker

Reg. 53977

Patent attorney

San Diego, CA · 92107

760-219-9875

Robert D Becker

Reg. 37778

Patent attorney

Buchalter

San Francisco, CA · 94105

415-227-3559

Stanley A Becker

Reg. 23037

Patent attorney

Law Offices of Stanley A. Becker

San Diego, CA · 92128

619-405-4799

Todd M Becker

Reg. 43487

Patent attorney

Womble Bond Dickinson US LLP

Sunnyvale, CA · 94085

408-341-3000

Frank Paul Becking

Reg. 42309

Patent attorney

Pacific Palisades, CA · 90272

650-804-2038

Christopher V. Beckman

Reg. 59050

Patent attorney

Los Angeles, CA · 90045

646-599-2277

David M. Beckwith

Reg. 73041

Patent attorney

San Diego, CA · 92130

619-987-2367

Daniel W. Bedell

Reg. 53979

Patent attorney

Gilroy, CA · 95020

650-804-6979

Sean B Bedford

Reg. 74097

Patent attorney

Masten Space Systems

Mojava, CA · 93501

352-226-5708

Robert M Bedgood

Reg. 43488

Patent attorney

Pillsbury Winthrop Shaw Pittmann LLP

San Diego, CA · 92130

858-509-4065

Harmonhinder S Bedi

Reg. 39904

Patent attorney

Ecotech Law Group, P.C.

San Francisco, CA · 94105

650-223-4578

Donald L Beeson

Reg. 27692

Patent attorney

Beeson Skinner Beverly, LLP

Oakland, CA · 94612

510-832-8700

William J. Beeson

Reg. 76784

Patent attorney

UTC Aerospace Systems

San Diego, CA · 92110

815-262-2116

Ernest J Beffel· Jr

Reg. 43489

Patent attorney

Haynes Beffel & Wolfeld, LLP

Half Moon Bay, CA · 94019

650-712-0340

Anjali Behal

Reg. 66380

Patent attorney

Google Inc.

Mountain View, CA · 94043

650-253-5862

Victor Behar

Reg. 60691

Patent attorney

Erasca, Inc

San Diego, CA · 92121

619-878-3366

Brendon Beheshti

Reg. 81110

Patent attorney

Mountain View, CA · 94039

408-634-3414

Arthur J Behiel

Reg. 39603

Patent attorney

Silicon Edge Law Group, LLP

Pleasanton, CA · 94566

925-621-2113

Michael J. Behlen

Reg. 81473

Patent attorney

Eversheds Sutherland

San Francisco, CA · 94111

415-580-6131

William H Behn

Reg. 57590

Patent agent

Los Altos Hills, CA · 94022

650-949-0626

Isaac S Behnawa

Reg. 80760

Patent attorney

Orrick Herrington & Sutcliffe, LLP

San Francisco, CA · 94105

415-773-4547

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.