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 Cooley LLP, JW Law Group, and Qualcomm Inc..

Top cities in California

All practitioners in California

James M Wu

Reg. 45241

Patent attorney

JW Law Group

San Jose, CA · 95131

408-280-1800

Jia J Wu

Reg. 63128

Patent attorney

Qualcomm Inc.

San Diego, CA · 92121

858-651-4207

Kahn C. Wu

Reg. 66501

Patent agent

San Francisco, CA · 94107

510-828-0485

Liming Wu

Reg. 77427

Patent agent

Fortinet, Inc.

Sunnyvale, CA · 94588

408-235-7700

Louis L Wu

Reg. 44413

Patent attorney

Oakland, CA · 94610

510-652-2397

Meng Wu

Reg. 68175

Patent attorney

Cupertino, CA · 95014

408-598-2480

Min Wu

Reg. 80141

Patent attorney

Fenwick & West LLP

San Francisco, CA · 94104

415-875-2204

Nan Wu

Reg. 43360

Patent agent

Cooley LLP

San Francisco, CA · 94111-5800

415-693-2002

Randy Z. Wu

Reg. 65346

Patent agent

10X Genomics, Inc.

Pleasanton, CA · 94588

415-503-7895

Richard S. Wu

Reg. 84038

Patent agent

San Diego, CA · 92128

774-285-9063

Robert H. Wu

Reg. 60024

Patent agent

Cooley LLP

Palo Alto, CA · 94304-1130

650-943-5000

Rui Wu

Reg. 76289

Patent attorney

Foley & Lardner LLP

San Diego, CA · 92130

858-847-6724

Shao-Po Wu

Reg. 39082

Patent attorney

Law Offices Of Shao-po Wu

Claremont, CA · 91711

909-398-1831

Wallace Wu

Reg. 45380

Patent agent

Arnold & Porter LLP

Los Angeles, CA · 90017

213-243-4000

Walter Shih-chun Wu

Reg. 50816

Patent attorney

Dorsey & Whitney LLP

Palo Alto, CA · 94301

650-565-2248

Wei Wu

Reg. 71088

Patent agent

Los Gatos, CA · 95030

650-521-6015

Wentao Wu

Reg. 800152

Limited recognition

Sheppard, Mullin, Richter & Hampton, LLP

Menlo Park, CA · 94025

650-815-2638

Xiaowei Wu

Reg. 83361

Patent attorney

Goodwin Proctor, LLP

San Francisco, CA · 94105

607-379-8387

Ya Ling Wu

Reg. 61247

Patent attorney

Quest Diagnostics

San Juan Capistrano, CA · 92675

949-940-7231

Yaw-Jiun Wu

Reg. 58880

Patent attorney

Lord, Bissell and Brook, LLP

Los Angeles, CA · 90071

213-687-6764

Yiding Wu

Reg. 65992

Patent agent

Los Gatos, CA · 95032

408-358-7774

Yifan Wu

Reg. 800183

Limited recognition

Jones Day

San Diego, CA · 92121

858-314-1137

Yue A Wu

Reg. 55746

Patent agent

Fremont, CA · 94538

510-226-8046

Yvonne Y Wu

Reg. 64698

Patent agent

Orange, CA · 92865

714-974-8279

Zhe Wu

Reg. 52377

Patent attorney

Alameda, CA · 94502

650-837-7000

Ziran Wu

Reg. 75880

Patent agent

Valencia, CA · 91355

520-245-6221

John E Wurst

Reg. 40283

Patent attorney

Aneira Pharma, Inc.

San Diego, CA · 92127

858-355-9070

April M Wurster

Reg. 59623

Patent attorney

Baker & McKenzie LLP

San Diego, CA · 92130

858-523-6236

Stephen M. Wurth

Reg. 69796

Patent attorney

Qualcomm Incorporated

San Diego, CA · 92121

858-845-1509

Philip J Wyatt

Reg. 32449

Patent agent

Wyatt Technology Corporation

Santa Barbara, CA · 93117

805-681-9009 EXT 200

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.