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 Gazdzinski & Associates, PC, Creative Labs, Inc., and HG Law LLP.

Top cities in California

All practitioners in California

Robert F Gazdzinski

Reg. 39990

Patent attorney

Gazdzinski & Associates, PC

San Diego, CA · 92127

858-675-1670

Xinquan Ge

Reg. 76318

Patent agent

South San Francisco, CA · 94080

650-541-5535

Charlotte R. Geaghan-Breiner

Reg. 83670

Patent attorney

Menlo Park, CA · 94025

650-575-6476

Desmund L Gean

Reg. 52937

Patent agent

Creative Labs, Inc.

Milpitas, CA · 95035

408-546-6004

Nicholas Watts Gebelt

Reg. 50458

Patent attorney

Whittier, CA · 90602

562-945-7679

Anthony J. Gee

Reg. 80314

Patent agent

HG Law LLP

San Jose, CA · 95113

669-213-1069

Russell C Gee

Reg. 62178

Patent agent

SAN JOSE, CA · 95117

408-905-7877

Tyler J. Gee

Reg. 60634

Patent attorney

Townsend and Townsend and Crew LLP

San Francisco, CA · 94111

415-547-0200

Donald W. Geiger· Jr

Reg. 81406

Patent attorney

Sheppard Mullin Richter & Hampton LLP

San Diego, CA · 92130

858-720-8900

Rachael L. Geiger

Reg. 79851

Patent agent

Morgan, Lewis and Bockius

Palo Alto, CA · 95111

650-843-4000

Aleksandr Gelberg

Reg. 65027

Patent attorney

Fish and Richardson P.C.

San Diego, CA · 92130

858-678-4392

Michael A Gelblum

Reg. 55971

Patent attorney

Oracle Corporation

Redwood Shores, CA · 94065

650-506-5375

Noah Jacob Fromm Geldberg

Reg. 78160

Patent attorney

Valley Glen, CA · 91401

818-994-2920

Craig A Gelfound

Reg. 41032

Patent attorney

Arent Fox LLP

Los Angeles, CA · 90013

213-629-7400

Michael L Gencarella

Reg. 44703

Patent attorney

WOMBLE CARLYLE SANDRIDGE RICE

cupertino, CA · 95014

408-341-3015

Timothy H Gens

Reg. 29153

Patent attorney

Palo Alto, CA · 94306

650-949-4880

Erik T. Gentalen

Reg. 74398

Patent agent

Erik Gentalen Consulting, LLC

Fremont, CA · 94539

650-644-8881

Jonathan Gentin

Reg. 39991

Patent attorney

CSR PLC

Mountain View, CA · 94040

650-625-0700

June L Gentry

Reg. 71462

Patent agent

Gentry Ventures, LLC

Mountain View, CA · 94043

314-518-1095

Gordon C George

Reg. 55713

Patent attorney

Danville, CA · 94526-0787

925-837--1111

Thomas George

Reg. 45740

Patent attorney

Samsung Research America

Montana View, CA · 94043

408-718-0144

Bilyana P Georgieva

Reg. 59175

Patent attorney

Amgen Inc.

Thousand Oaks, CA · 91320-1799

424-422-6971

Michael M Gerardi

Reg. 33698

Patent attorney

Menifee, CA · 92584

909-672-4354

Eliot S Gerber

Reg. 18115

Patent attorney

Walnut Creek, CA · 94595

925-280-4942

Jackson P Gerber

Reg. 75582

Patent attorney

Newbury Park, CA · 91320

310-988-5645

Matthew A Gerges

Reg. 83622

Patent attorney

O'Melveny & Myers LLP

Newport Beach, CA · 92660

949-823-7981

Justas Geringson

Reg. 57033

Patent attorney

Hayward, CA · 94542

310-560-0929

Jayshree A. Gerken

Reg. 81927

Patent attorney

Loza & Loza LLP

Encinitas, CA · 92024

858-869-2101

Jason R. German

Reg. 69497

Patent attorney

The Law Firm of Jason R. German

San Francisco, CA · 94119

650-260-5479

Joel B German

Reg. 48676

Patent attorney

Edwards Lifesciences

Irvine, CA · 92614

949-250-6425

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.