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 Procopio, Cory, Hargreaves & Savitch, KPPB, LLP, and Silicon Counsel LLP.

Top cities in California

All practitioners in California

Alexander R. Wolfe

Reg. 78898

Patent agent

Procopio, Cory, Hargreaves & Savitch

San Diego, CA · 92024

619-906-5654

Jason D. Wolfe

Reg. 71327

Patent attorney

KPPB, LLP

Anaheim, CA · 92806

949-852-0000

John P Wolfe

Reg. 38365

Patent attorney

Silicon Counsel LLP

Palo Alto, CA · 94301

415-370-5441

Warren S Wolfeld

Reg. 31454

Patent attorney

Haynes Beffel & Wolfeld LLP

Half Moon Bay, CA · 94019

650-712-0340

Jason W Wolff

Reg. 43281

Patent attorney

Fish & Richardson P.C.

San Diego, CA · 92130

858-678-5070

Jessica R Wolff

Reg. 37261

Patent attorney

Wolff IP, a Prof. Corp.

Carlsbad, CA · 92008

760-720-1330

Manfred E Wolff

Reg. 43282

Patent agent

Intellepharm, Inc.

Laguna Beach, CA · 92651

714-494-5458

Jonathan L. Wolfsberger

Reg. 74877

Patent agent

Red Hat

Raleigh, CA · 27617

184-765-05758

Louis V Wollenberger

Reg. 55738

Patent agent

Granite Bay, CA · 95746

970-301-2072

Hee Won

Reg. 68530

Patent attorney

Los Angeles, CA · 90033

408-623-8262

Ada Oi Tak Wong

Reg. 55740

Patent attorney

Revolution Medicines, Inc.

Redwood City, CA · 94063

650-619-9866

Alice L Wong

Reg. 39449

Patent attorney

Sunnyvale, CA · 94086

408-335-9790

Amy L Wong

Reg. 67553

Patent agent

Schox Patent Group

San Francisco, CA · 94107

888-775-9990

Benton T Wong

Reg. 53788

Patent attorney

Dublin, CA · 94568

510-846-0468

Brian J. Wong

Reg. 81620

Patent agent

Irvine, CA · 92618

909-966-9445

Brian D. Wong

Reg. 69393

Patent agent

Belmont, CA · 94002

650-591-7685

Carla M Wong

Reg. 45788

Patent agent

Livermore, CA · 94551

Charles C Wong

Reg. 50423

Patent attorney

Rancho Palos Verdes, CA · 90275

310-544-6240

Chui Kiu Teresa Wong

Reg. 48042

Patent attorney

Qualcomm, Inc.

Santa Clara, CA · 95051

408-546-3001

Claudine V. Wong

Reg. 72270

Patent attorney

Kilpatrick Townsend & Stockton LLP

Menlo Park, CA · 94025

650-463-7601

Connie Wong

Reg. 62901

Patent attorney

AMGEN INC.

South San Francisco, CA · 94080

650-244-2523

David P. C. Wong

Reg. 62685

Patent attorney

San Francisco, CA · 94134

415-468-2692

Denise Hing Wong

Reg. 59622

Patent attorney

Denise Wong Patent Law

Dublin, CA · 94568

925-310-5926100

Eric G Wong

Reg. 45232

Patent agent

Los Altos, CA · 94022

650-917-0459

Erin C. Wong

Reg. 61831

Patent agent

Autodesk, Inc.

SAN FRANCISCO, CA · 94105

415-513-1948

Francis Wong

Reg. 67468

Patent agent

Trojan Law Offices

Beverly Hills, CA · 90212

310-777-8399

Gilbert C Wong

Reg. 57990

Patent attorney

Intuitive Surgical, Inc.

Sunnyvale, CA · 94086

408-523-2100

Hau Yung 0 Wong

Reg. 62642

Patent agent

San Jose, CA · 95112

408-807-7682

Ivan J Wong

Reg. 70751

Patent agent

Fenwick & West LLP

Mountain View, CA · 94041

650-335-7695

James J Wong

Reg. 34949

Patent attorney

Belmont, CA · 94002

650-393-0728

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.