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 Jeffer Mangels & Mitchell LLP, Nuro, and Quintero Law Office, PC.

Top cities in California

All practitioners in California

Jonathan Alan Quine

Reg. 41261

Patent attorney

Alameda, CA · 94501-1048

510-523-5489

Zachary B Quinlan

Reg. 81561

Patent attorney

Jeffer Mangels & Mitchell LLP

Los Angeles, CA · 90067

310-994-2693

Bryan M. Quinn

Reg. 67103

Patent attorney

Nuro

Mountain View, CA · 94043

833-687-6268

Carole A Quinn

Reg. 39000

Patent attorney

Fullerton, CA · 92838-5427

714-738-6226

Nelson A Quintero

Reg. 52143

Patent attorney

Quintero Law Office, PC

Venice, CA · 90291

310-909-8535

Antonio D Quirante

Reg. 61781

Patent agent

Baldwin Park, CA · 91706

626-222-9177

Trevor J. Quist

Reg. 75856

Patent attorney

Sheppard, Mullin, Richter & Hampton LLP

Palo Alto, CA · 94301

650-815-2645

Gabriella R. Quitevis

Reg. 84890

Patent agent

Benicia, CA · 94510

707-771-4515

Edward S Quon

Reg. 52144

Patent attorney

Manatt Phelps & Phillips

Palo Alto, CA · 94304

650-812-1300

Paul F Rabedeaux

Reg. 56830

Patent agent

Saratiga, CA · 95070

408-667-7926

Nancy K Raber

Reg. 47013

Patent attorney

Yahoo! Inc.

Sunnyvale, CA · 94089

408-349-7521

Tedi S Rabold

Reg. 80637

Patent agent

San Francisco, CA · 94114

415-215-8626

Brent Rabowsky

Reg. 41262

Patent attorney

Oxnard, CA · 93035

805-382-5225

Michael S Rabson

Reg. 34905

Patent attorney

Wilson Sonsini Goodrich & Rosati

Palo Alto, CA · 94027

650-493-9300

Gregory A. Racciato

Reg. 62251

Patent attorney

TWG

Escondido, CA · 92027

760-839-6925

David B Raczkowski

Reg. 52145

Patent attorney

Kilpatrick Townsend & Stockton LLP

San Francisco, CA · 94111

415-576-0200

Fariba K Rad

Reg. 36249

Patent agent

Irvine, CA · 92602

714-832-2276

Leah M Raddatz

Reg. 78987

Patent agent

Run 8 Patent Group

San Francisco, CA · 94103

415-617-9080

Peggy A Radel

Reg. 57258

Patent agent

Berkeley, CA · 94702

510-527-3279

Kanika R Radhakrishnan

Reg. 49093

Patent attorney

Evergreen Valley Law Group

San Jose, CA · 95131

408-666-4479

Daniel M. Radke

Reg. 69820

Patent attorney

Tensegrity Law Group LLP

Redwood Shores, CA · 94065

650-802-6013

Edward J Radlo

Reg. 26793

Patent attorney

Radlo IP Law Group

Los Altos Hills, CA · 94022

650-397-5887

Predrag Radosavljevic

Reg. 73537

Patent agent

Fenwick & West, LLP

Mountain View, CA · 94041

650-335-7712

Paige E Radtke

Reg. 77396

Patent attorney

Knobbe, Martens, Olson & Bear, LLP

Irvine, CA · 92614

949-760-0404

Omar Y Radwan

Reg. 80626

Patent agent

Clovis, CA · 93611

714-598-6151

Barbara Rae-Venter

Reg. 32750

Patent attorney

Rae-Venter Law Group

Carmel, CA · 93921

831-915-1666

Daniel E. Rafferty

Reg. 64574

Patent agent

Biouisability

Santa Clara, CA · 95051

408-813-5097

John Raymond Rafter· II

Reg. 28533

Patent attorney

Irvine, CA · 92603

562-797-9012

Shloka K. Raghavan

Reg. 83091

Patent attorney

Self

Mountain View, CA · 94040

513-816-2079

Aswiniya Raghavendra Rao

Reg. 65776

Patent agent

San Jose, CA · 95134

518-810-1866

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.