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 Francis Law Group, Genentech, and The Walt Disney Company - Patent Dept..

Top cities in California

All practitioners in California

Nicole M Fortune

Reg. 52905

Patent attorney

Genentech

South San Francisco, CA · 94080

650-467-1419

David Edward Foster

Reg. 41759

Patent attorney

The Walt Disney Company - Patent Dept.

Burbank, CA · 91521

818-560-2755

Laura R Foster

Reg. 45860

Patent attorney

Ridgecrest, CA · 93555

760-375-3416

Thomas Daniel Foster

Reg. 44686

Patent attorney

TDFoster

San Diego, CA · 92130

858-922-2170

Rajesh V. Fotedar

Reg. 59562

Patent attorney

Cognition I.P. P.C.

San Francisco, CA · 94105

415-289-5470

Glenn J Foulds

Reg. 64714

Patent agent

Fenwick & West LLP

Mountain View, CA · 94041

650-335-7184

George L Fountain

Reg. 36374

Patent attorney

LOZA & LOZA, LLP

Upland, CA · 91786

714-453-9824

Thomas A Fournie

Reg. 25064

Patent attorney

Visalia, CA · 93277

559-802-3036

Candace P Fowler

Reg. 29685

Patent agent

Oxnard, CA · 93030

805-231-7000

Charles C Fowler

Reg. 39675

Patent attorney

Glidewell Laboratories

Irvine, CA · 92612

949-399-1763

Colin M Fowler

Reg. 64379

Patent attorney

Perkins Coie, LLP

Palo Alto, CA · 94304-1212

650-838-4725

Sarah E Fowler

Reg. 54854

Patent attorney

Paul, Hasting, Janofsky & Walker LLP

Palo Alto, CA · 94304-1106

650-320-1861

George L Fox

Reg. 64145

Patent attorney

Berkeley Lights, Inc.

Emeryville, CA · 94608

510-858-2855

James A Fox

Reg. 38455

Patent attorney

Corcept Therapeutics, Inc.

Menlo Park, CA · 94025

650-327-3270

Robert J Fox

Reg. 27635

Patent attorney

Yucca Valley, CA · 92286-2096

714-309-2330

Stephen P Fox

Reg. 22944

Patent attorney

Half Moon Bay, CA · 94019

650-868-7740

Thomas J Fox

Reg. 77576

Patent agent

Qualcomm

San Diego, CA · 92121

858-587-1121

Jordan J Fraboni

Reg. 80881

Patent attorney

Palo Alto, CA · 94306

856-745-3204

Tamara D Fraizer

Reg. 51699

Patent attorney

Squire Patton Boggs (US) LLP

Palo Alto, CA · 94304

650-856-6500

Rahjima R Francia

Reg. 76812

Patent agent

Kubota & Basol LLP

Los Angeles, CA · 90071

213-462-2618

Carol L Francis

Reg. 36513

Patent attorney

Bozicevic, Field & Francis LLP

Redwood City, CA · 94065

650-327-3400

Derek S Francis

Reg. 75460

Patent agent

Francis Law Group

Alameda, CA · 94501

510-523-6200

Ralph C Francis

Reg. 38884

Patent attorney

Francis Law Group

Alameda, CA · 94501

510-523-6200

Yaiza Grace Franco

Reg. 902928

Limited recognition

University of San Diego School of Law

San Diego, CA · 92110

Christopher M Franich

Reg. 69414

Patent attorney

Snell & Wilmer L.L.P.

San Diego, CA · 92122

305-523-9357

Cheryl L Franke

Reg. 44113

Patent attorney

Kudelski Group

San Francisco, CA · 94111

650-759-6421

Darren M Franklin

Reg. 51701

Patent attorney

Sheppard, Mullin, Richter & Hampton LLP

Los Angeles, CA · 90071-1448

213-620-1780

Eustace B Franklin

Reg. 34334

Patent agent

Eufra Patent Serivces

Redondo Beach, CA · 90278

424-241-0093

Ross Lee Franks· Jr

Reg. 47233

Patent attorney

Rancho Santa Fe, CA · 92067-5981

858-792-3404

Keith D Fraser

Reg. 47575

Patent attorney

The Fraser Firm, P.C.

Rancho Mirage, CA · 92270

213-864-1395

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.