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 Neurocrine Biosciences, Inc., Dechert LLP, and Lincoln Law School of San Jose.

Top cities in California

All practitioners in California

Justin F Boyce

Reg. 40920

Patent attorney

Dechert LLP

Mountain View, CA · 94040

650-813-4900

Kristina Marie Boyce

Reg. L3657

Limited recognition

Lincoln Law School of San Jose

San Jose, CA · 95113

408-977-7227

Brent Adam Boyd

Reg. 51020

Patent attorney

San Diego, CA · 92109

858-245-8361

Victoria L Boyd

Reg. 43510

Patent attorney

Adverum Biotechnologies, Inc.

Redwood City, CA · 94063

408-667-6761

William Eric Boyd

Reg. 43509

Patent attorney

Ostendo Technologies, Inc.

La Mesa, CA · 91941

949-413-1666

Brian S Boyer

Reg. 52643

Patent attorney

Syndicated Law PC

Redwood City, CA · 94063

650-556-1945

Bryan J Boyle

Reg. 52644

Patent attorney

Alkahest, Inc.

San Carlos, CA · 94070

650-801-0489

Erin A. Boyle Anderson

Reg. 78136

Patent agent

Wilson, Sonsini, Goodrich, & Rosati

San Diego, CA · 92130

858-350-2314

Donald R Boys

Reg. 35074

Patent agent

Central Coast Patent Agency, Inc.

Watsonville, CA · 95076

831-768-1755

Karl Bozicevic

Reg. 28807

Patent attorney

Bozicevic, Field & Francis LLP

Redwood City, CA · 94065

650-327-3400

Shirin Bozorgui

Reg. 62313

Patent agent

Applied Medical Resources Corporation

Rancho Santa Margarita, CA · 92688

949-713-8213

Theodore S Bozoukov

Reg. 69303

Patent agent

San Diego, CA · 92129

858-442-7185

Stanton Connell Braden

Reg. 32556

Patent attorney

San Diego, CA · 92121

732-771-5817

Larry J Bradfish

Reg. 43511

Patent attorney

US Environmental Protection Agency

San Francisco, CA · 94105

415-972-3934

Gregory T. Bradford

Reg. 65838

Patent attorney

Neurocrine Biosciences, Inc.

San Diego, CA · 92130

858-617-7057

David L Bradfute

Reg. 39117

Patent attorney

Neurocrine Biosciences, Inc.

San Diego, CA · 92130-2042

858-342-8148

Michael Joseph Bradley

Reg. 24388

Patent attorney

Michael J. Bradley Attorney at Law

Campbell, CA · 95008

408-378-5059

Nicole B Bradley

Reg. 48718

Patent attorney

Advanced Medical Optics, Inc.

Santa Ana, CA · 92705

John F Brady

Reg. 39118

Patent attorney

John F. Brady, Esq.

Capitola, CA · 95010

650-862-5872

Matthew O Brady

Reg. 44554

Patent attorney

Allergan, Inc.

Irvine, CA · 92612

714-246-4788

Brandon K Braga

Reg. 67885

Patent attorney

Badkoubehi & Dadmehr, LLP

Los Angeles, CA · 90025

858-405-9337

Benjamin C Brahm

Reg. 78228

Patent agent

Corona del Mar, CA · 92625

949-922-0348

Deepali A Brahmbhatt

Reg. 57886

Patent attorney

Sheppard Mullin Richter & Hampton LLP

Palo Alto, CA · 94301

650-815-2604

Tony Bramian

Reg. 70216

Patent attorney

FisherBroyles LLP

Los Angeles, CA · 90036

310-529-9091

Lisa E Bramwell

Reg. 903283

Limited recognition

Thomas Jefferson School of Law

San Diego, CA · 92101

445-213-8690

Edward A Branchaud

Reg. 55021

Patent agent

California Institute of Technology

Pasadena, CA · 91125

626-395-8337

John R Brancolini

Reg. 57218

Patent agent

Panasonic Intellectual Property Corporation of America

Torrance, CA · 90504

201-348-7000

Nira M Brand

Reg. 52648

Patent agent

Knobbe Martens Olson and Bear

Irvine, CA · 92614

949-721-7606

Lewis M Brande

Reg. 39545

Patent attorney

Brande & McCleary

Alta Loma, CA · 91737

909-980-7672

Laura L. Brandon

Reg. 38021

Patent attorney

Court Of Appeal Fourth Appellate Dist

San Diego, CA · 92101

619-645-2829

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.