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 Wilson Sonsini Goodrich & Rosati, George He, and Fish & Richardson P.C..

Top cities in California

All practitioners in California

John N Hazelwood

Reg. 18796

Patent attorney

Nevada City, CA · 95959

560-265-4434

George Z He

Reg. 77317

Patent agent

George He

Sunnyvale, CA · 94087

408-731-0123

Jiayue He

Reg. 81843

Patent attorney

Wilson Sonsini Goodrich & Rosati

Los Angeles, CA · 90071

213-361-9535

Mingkang He

Reg. 800151

Limited recognition

Fish & Richardson P.C.

Redwood City, CA · 94063

650-839-5079

Panqing He

Reg. 53007

Patent agent

ChemEOR, Inc.

Covina, CA · 91722

626-858-5077

Shanshan He

Reg. 73870

Patent attorney

Jones Day

San Diego, CA · 92121

858-314-1154

Tianyi He

Reg. 76027

Patent agent

Treyz Law Group, P.C.

San Francisco, CA · 94102

415-404-6088

Xiang He

Reg. 66360

Patent agent

Fremont, CA · 94555

415-533-1188

Xiao He

Reg. 70646

Patent agent

Foster City, CA · 94404

650-766-2904

John Thomas Headlee

Reg. 25985

Patent attorney

Sacramento, CA · 95831

916-391-5266

Kyle M. Headrick

Reg. 78425

Patent attorney

Wilson Sonsini Goodrich & Rosati

San Diego, CA · 92130

858-350-2311

Michael Francis Heafey

Reg. 38178

Patent attorney

Troutman Sanders LLP

San Francisco, CA · 94104

415-477-5710

Elaine Marie Heal

Reg. 44149

Patent attorney

Zuora, Inc.

Palo Alto, CA · 94404

408-373-9166

John F Heal

Reg. 53008

Patent attorney

Applied Medical Resources Corporation

Rancho Santa Margarita, CA · 92688

949-713-8283

Noel F Heal

Reg. 26074

Patent attorney

Noel F Heal Law Office

Palo Alto, CA · 94306

408-373-9166

Vicki Lynn Healy

Reg. 48343

Patent attorney

Amgen

Thousand Oaks, CA · 91320

805-447-3630

Micheal L Hebert

Reg. 63329

Patent attorney

Greenberg Traurig, LLP

San Diego, CA · 92130

619-848-2513

David R Heckadon

Reg. 50184

Patent attorney

Gordon & Rees, LLP

San Francisco, CA · 94111

415-875-3266

Gary A Hecker

Reg. 31023

Patent attorney

Munck Wilson Mandala, LLP

Los Angeles, CA · 90067

310-855-3311

Peter A Hecker

Reg. 74236

Patent attorney

Wilson Sonsini Goodrich & Rosati

San Diego, CA · 92130-3002

858-350-2321

Richard F Hector

Reg. 51796

Patent attorney

Amunix, Inc.

Mountain View, CA · 94043

650-428-1800

William A. Hector

Reg. 66823

Patent attorney

Venable, LLP

San Francisco, CA · 94111

415-653-3738

Suzanne Jones Heeg

Reg. 35911

Patent attorney

Northrop Grumman Corporation

El Segundo, CA · 90245

310-331-6833

Nima Hefazi

Reg. 63658

Patent attorney

Newport Coast, CA · 92657

949-760-5204

Siamak S Hefazi

Reg. 75174

Patent attorney

Buchalter, APC

San Diego, CA · 92130

619-679-1579

Brenda J. Hefti

Reg. 69267

Patent attorney

Exelixis, Inc.

Alameda, CA · 95602

650-837-7000

Kendra S Heger

Reg. 55436

Patent attorney

FMA LLP S4S LLC and Strong Force Intellectual Capital, LLC

Alta Loma, CA · 91701

248-318-7780

David William Heid

Reg. 25875

Patent attorney

Rio Vista, CA · 94571

707-374-4892

Andrew E Heidari

Reg. 79232

Patent agent

Wilson Sonsini Goodrich & Rosati

San Diego, CA · 92130

858-350-2367

Colin B Heideman

Reg. 61513

Patent attorney

Knobbe, Martens, Olson & Bear, LLP

Seattle, CA · 98104

206-405-2000

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.