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 Stetina Brunda Garred and Brucker, TMB Law, and Dolby Laboratories.

Top cities in California

All practitioners in California

Timothy Martin Brown

Reg. 48069

Patent attorney

TMB Law

San Luis Obispo, CA · 93401

805-591-4609

Tyrome Yang Brown

Reg. 46580

Patent attorney

Dolby Laboratories

Sunnyvale, CA · 94085

408-330-3390

Wayne Benjamin Brown

Reg. 45484

Patent attorney

Quest Diagnostics, Inc.

San Juan Capistrano, CA · 92690

949-728-4747

William R Brown· Jr

Reg. 41645

Patent attorney

Law Offices of William R. Brown

Menlo Park, CA · 94025

650-329-8572

Sharon Elise Brown-Turner

Reg. 64205

Patent attorney

Law Offices of Andrew D. Fortney, Ph.D.P.C.

Fresno, CA · 93711

559-432-6847

Robert S Brownstein

Reg. 68040

Patent agent

Robert Brownstein & Associates

Santa Cruz, CA · 95065

831-818-1278

H Michael Brucker

Reg. 19737

Patent attorney

Emeryville, CA · 94608

510-654-6200

Hannah L. Brucker

Reg. 83347

Patent agent

Stetina Brunda Garred and Brucker

Aliso Viejo, CA · 92656

949-855-1246

William J Brucker

Reg. 35462

Patent attorney

Stetina Garred Brucker & Newboles

Aliso Viejo, CA · 92656

949-855-1246

James R Brueggemann

Reg. 28286

Patent attorney

Sheppard, Mullin, Richter & Hampton LLP

Los Angeles, CA · 90071

213-617-4156

Alla Brukman

Reg. 61254

Patent attorney

Amgen Inc.

Thousand Oaks, CA · 91320

805-447-1000

David Shane Brun

Reg. 46582

Patent attorney

King & Spalding LLP

Palo Alo, CA · 94304

415-318-1245

Bruce B Brunda

Reg. 28497

Patent attorney

Stetina Brunda Garred and Brucker

Aliso Viejo, CA · 92656

949-855-1246

Norman E Brunell

Reg. 26533

Patent attorney

Brunell IP, PC

Hermosa Beach, CA · 90254

310-692-5050

Michael R. Brunelle

Reg. 72062

Patent attorney

Hewlett - Packard Company

Palo Alto, CA · 94304

650-857-8104

Jaron K. Brunner

Reg. 75296

Patent attorney

Shook, Hardy & Bacon L.L.P.

Irvine, CA · 92614

949-475-1500

Christopher K. Brunnquell

Reg. 79006

Patent attorney

Foley & Lardner LLP

San Diego, CA · 92130

858-847-6700

Enrica Bruno

Reg. 56149

Patent attorney

Steinfl & Bruno

Pasadena, CA · 91101

626-792-0536

Michael B Bruns

Reg. 70064

Patent agent

Oakland, CA · 94612

513-827-0626

Robert M Brush

Reg. 45710

Patent attorney

Kim and Stewart LLP

San Jose, CA · 95113

732-795-0044

Mitchell R Brustein

Reg. 38394

Patent attorney

San Diego, CA · 92103

858-945-6028

Aimee M. Bryan

Reg. 83176

Patent agent

Blue Raven Scientific LLC

Ridgecrest, CA · 93555

760-977-6337

Dawn C Bryant

Reg. 69586

Patent attorney

Knobbe, Martens, Olson & Bear

San Francisco, CA · 94104

415-217-6311

Richard Harry Bryer

Reg. 18764

Patent attorney

Saratoga, CA · 95070

408-867-0402

Jane H Bu

Reg. 57221

Patent agent

Jane Bu In-house Counsel Service

San Francisco, CA · 94109

650-219-9211

Wen Bu

Reg. 59420

Patent agent

O'Melveny & Myers LLP

Los Angeles, CA · 90071-2899

213-430-6000

Graham M Buccigross

Reg. 65191

Patent attorney

Sheppard Mullin Richter & Hampton LLP

San Diego, CA · 92130

858-720-8900

John D Buchaca

Reg. 37289

Patent attorney

Charmasson Buchaca & Leach, LLP

San Diego, CA · 92108

619-294-2922

Robert L Buchanan

Reg. 40927

Patent agent

Torrey Pines Law Group

San Diego, CA · 92130

857-205-1249

Jenny L Buchbinder

Reg. 48588

Patent agent

Bozicevic, Field & Francis LLP

San Francisco, CA · 94105

415-230-8160

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.