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 Morgan, Lewis & Bockius LLP, Winston & Strawn LLP, and Venable LLP.

Top cities in California

All practitioners in California

David E Wang

Reg. 38358

Patent attorney

Winston & Strawn LLP

Menlo Park, CA · 94025

650-858-6588

Don Zhe Nan Wang

Reg. 83818

Patent attorney

Venable LLP

San Francisco, CA · 94111

415-343-4488

Elissa Yi-Ching Wang

Reg. 48668

Patent agent

IBM Corporation

San Jose, CA · 95141

408-463-5677

Ellen J Wang

Reg. 52339

Patent attorney

DECHERT LLP

Mountain View, CA · 94040-1499

650-813-4813

Gary F Wang

Reg. 44392

Patent attorney

Law Offices of Gary F. Wang

Pasadena, CA · 91105-1838

626-215-4279

Grant T. Wang

Reg. 79780

Patent agent

Palo Alto, CA · 94304

650-838-4300

Haojin Wang

Reg. 58265

Patent attorney

Qualcomm Inc.

San Diego, CA · 92121

214-543-7604

Hugh Wang

Reg. 47163

Patent attorney

The Scripps Research Institute, Office of Patent Counsel

La Jolla, CA · 92037

858-784-2937

Hui Wang

Reg. 63360

Patent attorney

Nicholson De Vos Webster & Elliott LLP

Palo Alto, CA · 94301

408-412-3021

Jennifer C Wang

Reg. 78649

Patent attorney

South Pasadena, CA · 91030

626-898-3779

Ji Wang

Reg. 80018

Patent attorney

San Diego, CA · 92130

858-720-5762

Jianbai Wang

Reg. 66838

Patent agent

Morgan, Lewis & Bockius LLP

Palo Alto, CA · 94304

650-843-7843

Jianle Wang

Reg. 76647

Patent attorney

San Diego, CA · 92121

860-471-0278

Jiao Wang

Reg. 78294

Patent agent

Fish & Richardson

San Diego, CA · 92130

858-678-4390

Jihang Wang

Reg. 800129

Limited recognition

Morgan, Lewis & Bockius LLP

San Francisco, CA · 94105

415-442-1420

Joy Y. Wang

Reg. 81371

Patent agent

Mountain View, CA · 94043

610-844-1301

Justin Y. Wang

Reg. 73344

Patent attorney

San Jose, CA · 95128

408-660-2019

Justin D. Wang

Reg. 81975

Patent agent

Brea, CA · 92821

626-388-6351

Karen J Wang

Reg. 62503

Patent attorney

Fitch, Even, Tabin & Flannery, LLP

San Diego, CA · 92121

858-552-1311

Karry W Wang

Reg. 50178

Patent attorney

Law Offices of Karry W. Wang

Richmond, CA · 94806

510-223-8818

Kenneth K. Wang

Reg. 82675

Patent attorney

Bunsow De Mory

Redwood City, CA · 94063

630-696-0800

Kun Wang

Reg. 57747

Patent attorney

Bristol Myers Squibb

San Diego, CA · 92121

858-922-9689

Lehua Wang

Reg. 48023

Patent agent

Greenberg Traurig LLP

East Palo Alto, CA · 94303

650-328-8500

Liaoteng Wang

Reg. 62934

Patent attorney

Palo Alto, CA · 94303

650-326-3476

Lynne X. Wang

Reg. 74876

Patent attorney

Gatik AI Inc.

Mountain View, CA · 94041

972-800-1632

Mark I Wang

Reg. 65282

Patent agent

Law Office of Mark Wang, P.C.

San Diego, CA · 92104

619-306-2226

Peter Y Wang

Reg. 40452

Patent attorney

Fremont Unified School District

Fremont, CA · 94538

510-657-2350

Philip X Wang

Reg. 74621

Patent attorney

Russ August & Kabat

Los Angeles, CA · 90025

310-826-7474

Piwen Wang

Reg. 77638

Patent agent

Downey, CA · 90241

562-299-2951

Qinlei Wang

Reg. 68694

Patent agent

Abbott Laboratories

Pleasanton, CA · 94588

925-847-8600

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.