California

Patent attorneys in California

California hosts 9,567 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 Google LLC, Morgan, Lewis & Bockius LLP, and Kilpatrick Townsend & Stockton LLP.

Top cities in California

All practitioners in California

Ahren C Hsu-Hoffman

Reg. 50862

Patent attorney

Morgan, Lewis & Bockius LLP

Palo Alto, CA · 94304

650-843-4000

James S Hsue

Reg. 29545

Patent attorney

San Francisco, CA · 94116

415-276-6500

Victor Y. Hsue

Reg. 81811

Patent attorney

Google LLC

Mountain View, CA · 94043

650-253-0000

Hain-Whei Hsueh

Reg. 68021

Patent agent

Kilpatrick Townsend & Stockton LLP

San Francisco, CA · 94111

415-273-7548

Peter C Hsueh

Reg. 45574

Patent attorney

Lewis Roca Rothgerber Christie LLP

Glendale, CA · 91203-1445

626-795-9900

Ashley M. Hu

Reg. 62874

Patent attorney

Google LLC

Mountain View, CA · 94043

714-261-0205

Fred H. Hu

Reg. 80386

Patent agent

Veeva Systems Inc.

Pleasanton, CA · 94588

925-452-6500

Irene Y Hu

Reg. 34625

Patent attorney

Law Office of Irene Hu

Sunnyvale, CA · 94087

408-542-9877

Keren Hu

Reg. 60636

Patent attorney

Javalon Law, PC.

Menlo Park, CA · 94025

650-608-5726

Lily W Hu

Reg. 65487

Patent agent

Palo Alto, CA · 94306

650-799-9788

Shoefong C Hu

Reg. 50228

Patent agent

San Jose, CA · 95120

408-997-1986

Teresa L Hu

Reg. 54189

Patent attorney

Skadden, Arps, Slate, Meagher & Flom LLP

Palo Alto, CA · 94301

650-470-4524

Wenjie Hu

Reg. 63031

Patent agent

NantKwest, Inc.

Culver City, CA · 90232

858-633-0300

Xiaoyu Hu

Reg. 83848

Patent agent

Foster City, CA · 94404

312-972-2607

Yitai Hu

Reg. 40653

Patent attorney

Super Micro Computer Inc.

Menlo Park, CA · 94025

650-575-1518

Zhong-Min Hu

Reg. 77501

Patent attorney

Van Pelt, Yi & James LLP

Cupertino, CA · 95014

408-207-4769

Hong N Hua

Reg. 72499

Patent agent

San Diego, CA · 92121

858-245-3026

Ye Hua

Reg. 53042

Patent attorney

Pfizer, Inc.

San Diego, CA · 92121

858-622-3020

Andrew D. Huah

Reg. 71379

Patent attorney

Irvine, CA · 92618

530-302-5573

Alan Huang

Reg. 29652

Patent agent

Menlo Park, CA · 94025

650-321-3709

Angela C Huang

Reg. 69912

Patent agent

Hacienda Heights, CA · 91745

626-961-9946

Aris Chin Lin Huang

Reg. 78980

Patent agent

Womble Bond Dickinson (US) LLP

Glendale, CA · 91203

626-795-9000

Benjamin C Huang

Reg. 41080

Patent agent

Geron Corporation

Menlo Park, CA · 94025

650-566-7238

Bo N. Huang

Reg. 66322

Patent attorney

Polsinelli

Los Angeles, CA · 90067

310-556-6746

Brian S Huang

Reg. 56378

Patent attorney

San Mateo, CA · 94403

650-867-5381

Chen Pin Huang

Reg. 75826

Patent attorney

Kubota & Basol LLP

Los Angeles, CA · 90071

213-408-0795

Clover Huang

Reg. 55285

Patent agent

Van Pelt & Yi, LLP

Cupertino, CA · 95014

408-973-2594

Ernest C. Huang

Reg. 60083

Patent attorney

Procopio, Cory, Hargreaves & Savitch LLP

Palo Alto, CA · 94304

650-645-9013

Evelyn M. Huang

Reg. 75279

Patent agent

San Francisco, CA · 22209

646-932-8266

Guorong G Huang

Reg. 58512

Patent agent

independent

Poway, CA · 92064

858-208-9888

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?

9,567 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.