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 Corbis & Ferrum & Corbis Ventures, LLC, Wilson Sonsini Goodrich & Rosati, and Qualcomm.

Top cities in California

All practitioners in California

Darius A Baghai

Reg. 36996

Patent agent

Corbis & Ferrum & Corbis Ventures, LLC

Maliby, CA · 90265

310-600-0030

Tyler D. Baguley

Reg. 76153

Patent agent

Wilson Sonsini Goodrich & Rosati

San Diego, CA · 92130

858-350-2278

Christopher J Bahr

Reg. 68964

Patent attorney

Qualcomm

San Diego, CA · 92121

Amir Bahrami

Reg. 70460

Patent attorney

ScienBiziP, P.C.

Los Angeles, CA · 90071

213-426-1780

Monica S Baig-Silva

Reg. 67706

Patent attorney

Life Technologies

Carlsbad, CA · 92008

760-476-7720

Steven S Baik

Reg. 42281

Patent attorney

San Jose, CA · 95002

650-618-5282

Craig Bernard Bailey

Reg. 28786

Patent attorney

Fulwider Patton LLP

Los Angeles, CA · 90045

310-824-5555

David J Bailey

Reg. 59632

Patent attorney

KPPB, LLP

Anaheim, CA · 92806

949-852-0000

F. Pinar Bailey

Reg. 71605

Patent agent

Fenwick & West

Mountain View, CA · 94041

650-988-8500

Shannon C. Bailey

Reg. 68123

Patent attorney

Shannon Bailey Law

Burbank, CA · 91505

818-973-2713

Vincent P Bailey

Reg. 39100

Patent attorney

Law Office Of Vincent P Bailey

Laguna Niguel, CA · 92677

949-249-8179

Jasamine Bains

Reg. 67651

Patent attorney

Intersil Corporation

San Jose, CA · 95035

408-546-3636

Nena Bains

Reg. 47400

Patent attorney

Kilpatrick Townsend and Stockton LLP

Menlo Park, CA · 94025

650-326-2400

Atanas T. Baitchev

Reg. 82414

Patent attorney

Perkins Coie LLP

San Diego, CA · 92130

858-720-5784

Reena Bajpai

Reg. 69996

Patent attorney

Wilson Sonsini Goodrich and Rosati

Palo Alto, CA · 94304

650-849-3049

Neil S Bajpayee

Reg. 70461

Patent agent

Trethera Corporation

Beverly Hills, CA · 90212

724-422-7926

Oliver S Bajracharya

Reg. 55905

Patent attorney

Christie, Parker & Hale, LLP

Glendale, CA · 91203-1445

626-795-9900

Sanjeev S. Bajwa

Reg. 72419

Patent attorney

Hickman Palermo Becker Bingham LLP

San Jose, CA · 95113

408-414-1208

I Michael Bak-Boychuk

Reg. 26362

Patent attorney

Attorney at Law

Long Beach, CA · 90831

562-432-8419

Brian L. Baker

Reg. 62870

Patent attorney

McDermott, Will & Emery, LLP

Palo Alto, CA · 94304

650-813-5063

Edwin H Baker

Reg. 22152

Patent attorney

berkeley ca, CA · 94705

510-845-0980

Freling E Baker

Reg. 24078

Patent attorney

Freling Baker

La Jolla, CA · 92038

858-246-6980

Gary Louis Baker

Reg. 41595

Patent attorney

Quine Intellectual Property Law Group, P.C.

Alameda, CA · 94501

510-337-7871

James Michael Baker

Reg. 47207

Patent agent

Pacheco, CA · 94553

415-424-2048

Jonathan D. Baker

Reg. 45708

Patent attorney

Dickinson Wright RLLP

Mountain View, CA · 94043

408-701-6180

Joseph R Baker· Jr

Reg. 40900

Patent attorney

Gavrilovich, Dodd & Lindsey LLP

San Diego, CA · 92122

858-458-3607

Kent D Baker

Reg. 38822

Patent attorney

Kent Baker

San Diego, CA · 92191

619-890-0407

La Veria Elaine Baker

Reg. 48496

Patent agent

Los Angeles, CA · 90067

310-365-3734

Rachel A Baker

Reg. 71875

Patent attorney

Costa Mesa, CA · 92626

714-668-5543

Robert E. Bakin

Reg. 60459

Patent agent

Burlingame, CA · 94010

571-215-3507

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.