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 Twelve Benefit Corporation, YHE Law LLP, and Venable LLP.

Top cities in California

All practitioners in California

Benjamin K Hitt

Reg. 69091

Patent agent

Twelve Benefit Corporation

Berkeley, CA · 94710

515-460-8887

Suzan J Hixon

Reg. 54171

Patent attorney

San Francisco, CA · 94100

502-345-7894

Benjamin Ho

Reg. 83979

Patent attorney

San Jose, CA · 95129

408-802-7811

Brian B. Ho

Reg. 60199

Patent attorney

YHE Law LLP

Lafayette, CA · 94549

415-599-0602

Duarte Y. Ho

Reg. 75760

Patent agent

Venable LLP

Los Angeles, CA · 90067

310-229-0458

Eric Ho

Reg. 39711

Patent attorney

Qualcomm Incorporated

San Diego, CA · 92121

858-658-2752

Kenie Ho

Reg. 51808

Patent attorney

San Francisco, CA · 94107

202-903-3545

Michael T Ho

Reg. 59305

Patent agent

Weaver Austin Villeneuve & Sampson LLP

Oakland, CA · 94612-0250

510-663-1100

Patrick H Ho

Reg. 58185

Patent agent

La Jolla Institute for Allergy & Immunology

La Jolla, CA · 92037

858-752-6500

Pui Tong Ho

Reg. 44155

Patent attorney

Ladera Ranch, CA · 92694-1331

310-435-1734

Rebecca M. Ho

Reg. 76590

Patent attorney

Santa Clarita, CA · 91351

661-348-3004

Yvonne T Ho

Reg. 62524

Patent attorney

San Jose, CA · 95150

Phuong Quan Hoang

Reg. 41839

Patent attorney

Spatial Digital Systems, Inc

Agoura Hills, CA · 91301

949-584-3265

Benjamin B. Hoar

Reg. 82026

Patent agent

Wilson Sonsini Goodrich & Rosati

Los Angeles, CA · 90067

424-599-5745

Tobin L Hobbs

Reg. 63260

Patent agent

Hobbs Trucking Company

Anaheim, CA · 92801

714-776-2520

Mercedes L Hobson

Reg. 72718

Patent attorney

Google LLC (X, the Moonshot Factory)

Mountain View, CA · 94043

310-254-0046

James Mark Hoch

Reg. 35195

Patent attorney

Zogenix, Inc.

Emeryville, CA · 94608

415-269-7694

Lauren Elizabeth Hockett

Reg. 72865

Patent attorney

Knobbe Martens

San Diego, CA · 92130

858-707-4000

Alan Scott Hodes

Reg. 38185

Patent attorney

Menlo Park, CA · 94026

650-839-4786

Jonas J. Hodges

Reg. 58898

Patent attorney

Procopio

Irvine, CA · 92618

949-468-1346

Frank L Hodgson

Reg. 68907

Patent agent

Portola Valley, CA · 94028

650-529-1121

Matthew S. Hodgson

Reg. 76910

Patent attorney

Kirkland & Ellis

Los Angeles, CA · 90071

831-236-2574

Serge J Hodgson

Reg. 40017

Patent attorney

Innovation Counsel LLP

San Jose, CA · 95134

831-920-4171

Craig R. Hodulik

Reg. 60200

Patent attorney

San Diego, CA · 92126

858-405-5431

Jens Edward Hoekendijk

Reg. 37149

Patent attorney

Law Office of Jens Hoekendijk

Burlingame, CA · 94011-4787

415-412-3322

Doneil J Hoekman

Reg. 53026

Patent attorney

Santa Clara, CA · 95055

408-509-7921

Quin C Hoellwarth

Reg. 45738

Patent agent

Apple Inc.

Cupertino, CA · 95014

208-922-3571

Gary Hoenig

Reg. 46776

Patent attorney

Santa Rosa, CA · 95405

707-545-0900

Howard Leslie Hoffenberg

Reg. 32239

Patent attorney

IP and Business Law Offices of Howard L. Hoffenberg, Esq.

Los Angeles, CA · 90024

310-670-5825

Brian M Hoffman

Reg. 39713

Patent attorney

Fenwick & West LLP

Mountain View, CA · 94041

415-875-2484

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.