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 Brain Corporation, The Law Office of J. Chase Covello, and Camuti Law Group, APC.

Top cities in California

All practitioners in California

Jamie Shien-I Couvignou

Reg. 78944

Patent agent

Brain Corporation

San Diego, CA · 92121

858-414-0460

Joseph C Covello

Reg. 73893

Patent attorney

The Law Office of J. Chase Covello

Santa Monica, CA · 90401

916-337-1002

Kathi A Cover

Reg. 37803

Patent attorney

Carlsbad, CA · 92009

301-655-4018

Andrew R. Cowan

Reg. 82005

Patent attorney

Camuti Law Group, APC

Aliso Viejo, CA · 92656

949-716-5565

Thomas S. H. Cowan

Reg. 68578

Patent attorney

Knobbe Martens Olson & Bear, LLP

Irvine, CA · 92614

858-707-4000

John D Cowart

Reg. 38415

Patent attorney

TERADATA CORPORATION

San Diego, CA · 92127

858-485-4903

Clarince Joyce L. Cox

Reg. 82436

Patent agent

Yorba Linda, CA · 92887

840-888-9893

Jeffrey M Cox

Reg. 42445

Patent attorney

Schox PLC

San Francisco, CA · 94107

888-775-9990

Tyler S. Cox

Reg. 76130

Patent agent

Knobbe, Martens, Olson & Bear, LLP

Irvine, CA · 92614

415-217-3516

Christopher M. Coy

Reg. 75968

Patent attorney

QSC, LLC

Costa Mesa, CA · 92626

310-995-5320

Harley M. Cragun

Reg. 82457

Patent agent

Kubota & Basol

Los Angeles, CA · 90017

323-420-8355

Anthony G Craig

Reg. 50342

Patent attorney

SCI- Law Strategies, PC

Solana Beach, CA · 92075

858-847-0115

Barrett Craig

Reg. 44050

Patent attorney

BARRETT CRAIG, ESQ

Huntington Beach, CA · 92648

714-587-9131

Keith C Cramer

Reg. 46647

Patent attorney

Gordon and Rees, LLP

San Diego, CA · 92130

619-230-7748

Linda D Crampton

Reg. 56334

Patent agent

Los Alamitos, CA · 90720

562-596-2273

Craig A Crandall

Reg. 38416

Patent attorney

Craig A Crandall, APC

Newbury Park, CA · 91320

805-405-3121

Jerry A Crandall

Reg. 56765

Patent attorney

Crandall Patent Group, LLC

San Jose, CA · 95110

408-409-0366

Michael L Crapenhoft

Reg. 37115

Patent attorney

Huntington Beach, CA · 92648

949-331-3069

Jonathan P Crawford

Reg. 66605

Patent attorney

Adobe Inc

San Jose, CA · 95110

408-536-2981

William C Cray

Reg. 27627

Patent attorney

Shartsis Friese LLP

San Francisco, CA · 94111-3598

415-773-7381

Gina H Cremona

Reg. 74844

Patent attorney

Tensegrity Law Group LLP

Redwood Shores, CA · 94065

650-802-6018

Cathy E Cretsinger

Reg. 51588

Patent attorney

KILPATRICK TOWNSEND & STOCKTON LLP

San Francisco, CA · 94111

415-576-0200

Douglas J Crisman

Reg. 39951

Patent attorney

Morgan, Lewis & Bockius LLP

Palo Alto, CA · 94306

650-843-4000

Charlette M Crissman

Reg. 46113

Patent attorney

Crissman Law Office

Bakersfield, CA · 93390

661--85-8-6476

David E Crites

Reg. 64016

Patent agent

Los Gatos, CA · 95032

650-743-2580

Amy L. Crocetti Donati

Reg. 46648

Patent attorney

Aliso Viejo, CA · 92656

412-952-6811

Steven C. Crocker

Reg. 50642

Patent attorney

eBay

San Jose, CA · 95125

408-376-7400

K David Crockett

Reg. 34311

Patent attorney

Crockett & Crockett, PC

Aliso Viejo, CA · 92656

949-588-6171

Susan L Crockett

Reg. 51590

Patent attorney

Crockett & Crockett

Aliso Viejo, CA · 92656

949-588-6171

Jason W Croft

Reg. 65195

Patent attorney

Buchalter

Los Angeles, CA · 90017

213-891-0700

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.