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 Law Office of William F. Stryker, The Mueller Law Office, and Gilead Sciences, Inc..

Top cities in California

All practitioners in California

William F Stryker

Reg. 52258

Patent attorney

Law Office of William F. Stryker

San Diego, CA · 92101

619-235-8595

Paul G. Stuart

Reg. 76309

Patent agent

The Mueller Law Office

San Diego, CA · 92130

858-481-1883

Tara C Stuart

Reg. 67405

Patent attorney

Gilead Sciences, Inc.

Foster City, CA · 94404

678-490-6776

Todd A Stuart

Reg. 55654

Patent attorney

The Boeing Company

Seal Beach, CA · 90740

818-430-3505

Katherine C. Stuckman

Reg. 74651

Patent agent

Katz Ruby & Carle LLP

Costa Mesa, CA · 92626

512-925-1503

Steven M. Studulski

Reg. 67261

Patent attorney

ASML

San Jose, CA · 95131

408-597-8600

Steven E Stupp

Reg. 54475

Patent agent

Stupp Associates, LLC

Menlo Park, CA · 94025

650-704-4434

Elaine J Su

Reg. 78170

Patent agent

Wilson Sonsini Goodrich & Rosati

San Francisco, CA · 94107

415-947-2489

Frank H Su

Reg. 51358

Patent attorney

Hinshaw & Culbertson LLP

Los Angeles, CA · 90025

310-909-8000

Jinntung Su

Reg. 42174

Patent attorney

Fremont, CA · 94539

510-279-2300

Peggy Ann Su

Reg. 41336

Patent agent

Cisco Systems, Inc.

San Jose, CA · 94086

408-526-8734

Peter C Su

Reg. 43939

Patent attorney

Dentons US LLP

Palo Alto, CA · 94304

650-798-0350

Siwen Su

Reg. 83273

Patent attorney

Knobbe, Martens, Olson & Bear, LLP

Irvine, CA · 92614

949-721-2813

Ting Su

Reg. 56589

Patent agent

Brii Biosciences

San Mateo, CA · 94402

650-204-1393

Tsu-Shin G Su

Reg. 66906

Patent attorney

Google LLC

Mountain View, CA · 94043

650-253-0000

Pedro F Suarez

Reg. 45895

Patent agent

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

San Diego, CA · 92130

858-314-1500

Raymond J Suberlak

Reg. 29112

Patent attorney

AUDATEX North America, Inc.

San Diego, CA · 92128

925-413-0108

Nitin Subhedar

Reg. 42175

Patent attorney

Heller Ehrman White & McAuliffe, LLP

Menlo Park, CA · 94025

650-324-7081

Sujatha Subramaniam

Reg. 48739

Patent attorney

Roche Diagnostics

Pleasanton, CA · 94566

925-520-5963

Payal B. Sud

Reg. 77424

Patent agent

Redwood City, CA · 94065

650-833-7725

Gabrielle Sue

Reg. 81252

Patent attorney

Belmont, CA · 94002

650-888-2336

Chia-Hsin Suen

Reg. 60209

Patent agent

Squire Patton Boggs LLP

Palo Alto, CA · 94034

626-376-1053

Yoshiko Sugahara

Reg. 72770

Patent agent

QuantumScape Corporation

San Jose, CA · 95110

408-452-2000

Connor M. Sugasawara

Reg. 84817

Patent agent

Van Pelt, Yi & James LLP

Los Altos, CA · 94022

408-207-4773

Megan M Sugiyama

Reg. 54476

Patent attorney

Cohesity, Inc

San Jose, CA · 95110

855-926-4374

Gregory D Suh

Reg. 48187

Patent attorney

Artegis Law Group, LLP

Sunnyvale, CA · 94085

Young J Suh

Reg. 41337

Patent attorney

Solazyme, Inc.

South San Francisco, CA · 94080

650-780-4777

Meng Sui

Reg. 62633

Patent agent

Greeberg Traurig

East Palo Alto, CA · 94303

650-289-7851

Gabriel S Sukman

Reg. 60537

Patent attorney

ClearstoneIP LLC

Redwood City, CA · 94065

650-714-4143

Jesse D Sukman

Reg. 54477

Patent attorney

Roger Cleveland Golf Company

Huntington Beach, CA · 92647

714-889-5856

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.