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 Wilson Sonsini Goodrich & Rosati, Shay Glenn LLP, and VMware, Inc..

Top cities in California

All practitioners in California

Douglas C Limbach

Reg. 35249

Patent attorney

Shay Glenn LLP

San Mateo, CA · 94403

650-212-1700

Bo-In Lin

Reg. 33948

Patent agent

Los Altos Hills, CA · 94022

650-949-0418

Chen-Chi Lin

Reg. 71500

Patent attorney

San Jose, CA · 95120

408-666-1124

Chun Shi Lin

Reg. 76916

Patent agent

Wilson Sonsini Goodrich & Rosati

San Diego, CA · 92130

858-350-2300

Daniel J Lin

Reg. 47750

Patent attorney

VMware, Inc.

Palo Alto, CA · 94304

650-427-3096

Dennis C. Lin

Reg. 75105

Patent attorney

NVIDIA Corporation

Santa Clara, CA · 95051

408-486-2000

Diana C Lin

Reg. 68388

Patent agent

Schox, PLC

San Francisco, CA · 94107

415-684-8688

Edison T. Lin

Reg. 60011

Patent attorney

Bitmain Inc.

San Jose, CA · 95110

408-655-8105

Eric C Lin

Reg. 69750

Patent attorney

Intuit Inc.

Mountain View, CA · 94043

650-316-9690

Eric B Lin

Reg. 67630

Patent attorney

Immersion Corporation

San Jose, CA · 95134

408-350-8754

Erika Lin

Reg. 70807

Patent agent

Sunnyvale, CA · 94089

209-499-8387

Fiona L. Lin

Reg. 79909

Patent agent

Fish & Richardson, P.C.

Redwood City, CA · 94063

650-839-5096

Hong S Lin

Reg. 54629

Patent attorney

Alberti Lim & Tonkovich LLP

Foster City, CA · 94404

650-825-4300

Hsiang Hong Lin

Reg. 56403

Patent attorney

San Francisco, CA · 94131

415-816-9525

Huan Yi Lin

Reg. 66645

Patent attorney

HUAN-YI LIN ATTORNEY-AT-LAW

Huntington Beach, CA · 92649

213-618-2358

Issac T Lin

Reg. 50672

Patent attorney

Cadence Design Systems, Inc.

San Jose, CA · 95134

408-914-6637

Jack T Lin

Reg. 58597

Patent agent

Varian Medical Systems

Palo Alto, CA · 94304

650-224-8780

Jackie Lin

Reg. 75586

Patent attorney

Intellectual Property Law Group LLP

San Jose, CA · 95113

408-286-8933

Jason Zse-Cherng Lin

Reg. 37492

Patent agent

Saratoga, CA · 95070-4523

408-357-0609

Jeffrey Lin

Reg. 46875

Patent attorney

Wilson Sonsini Goodrich and Rosati PC

Palo Alto, CA · 94304

650-493-9300

John H Lin

Reg. 63734

Patent agent

Los Angeles, CA · 90025

310-442-9300

Joseph T Lin

Reg. 38225

Patent attorney

Triplel Ring Technologies, Inc.

Newark, CA · 94560

510-592-3000

Lucy Lin

Reg. 83778

Patent agent

Ionis Pharmaceuticals

Carlsbad, CA · 92010

760-931-9200

Menglu Lin

Reg. 74520

Patent attorney

Walnut Creek, CA · 94598

408-480-5369

Min Lin

Reg. 59578

Patent attorney

Neurocrine Biosciences, Inc.

San Diego, CA · 92130

858-416-7614

Patti Y. Lin

Reg. 70558

Patent agent

Wilson Sonsini Goodrich & Rosati

Palo Alto, CA · 94304

650-849-3176

Richard Cheng-hong Lin

Reg. 56682

Patent attorney

Bunsow De Mory LLP

Redwood City, CA · 94063

650-351-7248

Rick H Lin

Reg. 61933

Patent attorney

Toshiba America Electronic Components, Inc.

Irvine, CA · 92618

949-430-1589

Roy J. Lin

Reg. 67098

Patent attorney

Remote, CA · 94111

310-923-1734

Sara C. Lin

Reg. 71501

Patent agent

Altis Law Group, Inc.

Brea, CA · 92821

714-706-3227

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.