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 Morrison & Foerster, Morrison & Foerster, LLP, and Potts Weinstein Financial Consulting.

Top cities in California

All practitioners in California

Karen G Potter

Reg. 57254

Patent attorney

Morrison & Foerster

San Diego, CA · 92130

858-314-7521

Kenyon David Potter

Reg. 50450

Patent agent

Palm Desert, CA · 92260

760-610-2254

Barbara C Potts

Reg. 72237

Patent agent

Morrison & Foerster, LLP

San Diego, CA · 92130

858-314-5472

Elizabeth Rae Potts

Reg. 43867

Patent agent

Potts Weinstein Financial Consulting

San Jose, CA · 95126

800-752-3592

Jerry Richard Potts

Reg. 27091

Patent attorney

Law Office of Jerry R. Potts

Escondido, CA · 92127

858-655-5973

Suzan Potuznik

Reg. 51353

Patent agent

Intellectual Property Consultant

San Diego, CA · 92130

858-342-7512

Sabrina D. Poulos

Reg. 62387

Patent attorney

Antheros Legal Advisors LLP

San Diego, CA · 92122

415-868-3115

Farrokh E Pourmirzaie

Reg. 45297

Patent agent

IBM Corporation

San Jose, CA · 95141

408-463-3539

Kayvon R. Pourmirzaie

Reg. 74970

Patent attorney

Young Basile Hanlon & MacFarlane, P.C.

Palo Alto, CA · 94301

415-450-6686

Mehdi Poursoltani

Reg. 79079

Patent attorney

UTULAW PC

Paramount, CA · 90723

949-800-6055

Natalie R Pous

Reg. 62191

Patent attorney

Apple Inc.

Cupertino, CA · 95014

669-227-8852

Adam B Powell

Reg. 70367

Patent attorney

Knobbe Martens

Palo Alto, CA · 94304

650-752-1100

Braden J Powell

Reg. 69159

Patent attorney

Google LLC

Mountain View, CA · 94043

Gregory T Powell

Reg. 47005

Patent attorney

San Francisco, CA · 94121

415-867-5294

Hannah W. Powell

Reg. 84418

Patent agent

Haynes Beffel & Wolfeld LLP

Half Moon Bay, CA · 94019

650-479-9265

Stanley C Powell

Reg. 48348

Patent agent

Sacramento, CA · 95821

916-484-6312

Stephen Forbes Powell

Reg. 43014

Patent agent

Burns Doane Swecker & Mathis, LLP

Redwood City, CA · 94065

650-622-2338

David J Power

Reg. 34508

Patent agent

Xyratex International

Fremont, CA · 94538

510-687-5458

Margaret A Powers

Reg. 39804

Patent attorney

Santa Clara, CA · 95055

408-332-8857

Vincent M Powers

Reg. 36246

Patent attorney

Cepheid, Inc.

Sunnyvale, CA · 94089

408-541-4191

Sumana Prabhu

Reg. 60449

Patent agent

Campbell, CA · 95008

408-394-1503

Gustavo R. Prado

Reg. 68357

Patent agent

San Diego, CA · 92103

404-825-4445

Heather L Prado

Reg. 67866

Patent attorney

San Diego, CA · 92103

858--90-9-1941

Kurt S. Prange

Reg. 75137

Patent attorney

Womble Bond Dickinson (US) LLP

Glendale, CA · 91203

626-795-9900

Sanjay Prasad

Reg. 36247

Patent attorney

Mountain View, CA · 94040

650-918-7647

Richard T. Praseuth

Reg. 67821

Patent attorney

Steptoe & Johnson LLP

Los Angeles, CA · 90071

213-439-9460

Susan E. Pratt

Reg. 83811

Patent attorney

Knobbe, Martens, Olson & Bear, LLP

Irvine, CA · 92614

202-640-6400

Andrew D. Presley

Reg. 69844

Patent agent

Kilpatrick, Townsend & Stockton, LLP

Walnut Creek, CA · 94596

925-817-3138

Jeannie E. Presley

Reg. 59585

Patent attorney

San Francisco, CA · 94122

415-317-4190

David Roy Pressman

Reg. 21104

Patent agent

San Francisco, CA · 94109-0409

415-447-5455

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.