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 Qualcomm, Inc., FRESH IP, PLC, and Jones Day.

Top cities in California

All practitioners in California

Liem T Do

Reg. 59804

Patent attorney

Qualcomm, Inc.

San Diego, CA · 92121

858-651-7558

Sang Wook S. Do

Reg. 83241

Patent agent

San Jose, CA · 95123

818-613-4037

Tram B. Do

Reg. 76447

Patent attorney

FRESH IP, PLC

San Diego, CA · 92193

858-333-0642

An Phuoc Doan

Reg. 57085

Patent attorney

Jones Day

Palo Alto, CA · 94303

650-739-3913

Lesley C. Dobbins

Reg. 60844

Patent attorney

Santa Clara, CA · 95051

408-256-3570

Matthew R Dobbins

Reg. 55119

Patent attorney

San Diego, CA · 92103

347-306-4364

Foster E. Dobry

Reg. 75720

Patent attorney

Dobry IP, PC

Alameda, CA · 94501

510-560-3813

Robert C Dockerty

Reg. 40996

Patent agent

Gualala, CA · 95445

707-785-1079

Elizabeth C Doctorov

Reg. 80596

Patent attorney

Wilson Sonsini Goodrich & Rosati

Palo Alto, CA · 94304

650-849-3239

Anastasia N. Dodd

Reg. 72989

Patent attorney

Blank Rome

Los Angeles, CA · 90067

424-239-3687

Travis L Dodd

Reg. 42491

Patent agent

Gavrilovich, Dodd & Lindsey, LLP

Fallbrook, CA · 92028

760-415-2352

Vinod J Doddamani

Reg. 58784

Patent attorney

Santa Ana Heights, CA · 92707

747-512-784

Zara A Doddridge

Reg. 59098

Patent attorney

Kilpatrick Townsend & Stockton LLP

San Francisco, CA · 94111

415-273-7514

Gerald Paul Dodson

Reg. 32787

Patent attorney

San Francisco, CA · 94105

415-658-7686

Jeremy C Doerre

Reg. 62146

Patent attorney

Amazon

Sunnyvale, CA · 94085

201-852-1555

Azade Dogan

Reg. 80812

Patent agent

Metagenomi, Inc.

Emeryville, CA · 94608

408-338-8201

Soeun Hong Doh

Reg. 41542

Patent agent

SH Grace Consulting

Solana Beach, CA · 92075

858-793-1242

Elizabeth A Doherty

Reg. 50894

Patent attorney

McNeill Baur PLLC

San Ramon, CA · 94583

925-200-4065

Michael Reza Dokhanchy

Reg. 62795

Patent agent

Mintz , Levin, Cohn, Ferris, Glovsky and Popeo , P .C

San Diego, CA · 92130

858-314-1596

Gregory F Dolan

Reg. 73304

Patent agent

Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.

San Francisco, CA · 94104

415-432-6096

David S Dolberg

Reg. 34469

Patent attorney

Law Office of David Dolberg, Esq., Ph.D.

Greenbrae, CA · 94904

510-685-6405

Colin J. Dolese

Reg. 79195

Patent agent

SAN FRANCISCO, CA · 94102

406-274-6887

Nancy A Dolhert

Reg. 63453

Patent attorney

U.S. Air Force - LA AFB

El Segundo, CA · 90245

310-653-1696

Michael S Doll

Reg. 44092

Patent attorney

Advantage IP Law Firm

Seal Beach, CA · 90740

562-799-5561

Anne L Dollard

Reg. 43935

Patent attorney

Takeda San Francisco, Inc.

South San Francisco, CA · 94080-4804

650-745-9353

Vladislav Dolnik

Reg. 52826

Patent agent

Alcor Biosparations

Mountain View, CA · 94043

650-964-1952

Jonathan Michael Doloff

Reg. 63521

Patent attorney

CANON U.S.A., INC.

Irvine, CA · 92612

949-932-3156

Jurg L. Domenig

Reg. 60155

Patent attorney

Cisco Systems, Inc.

San Jose, CA · 95134

336-830-5874

Richard B Domingo

Reg. 36784

Patent attorney

Nvidia Corp.

Santa Clara, CA · 95050

408-566-6481

Marius F. Keeley Domokos

Reg. 48153

Patent attorney

Shocking Technologies, Inc.

San Jose, CA · 95138

408-578-5175 X 135

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.