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 1Life Healthcare, Inc., Kirkland & Ellis LLP, and Premium Attorneys-at-Law.

Top cities in California

All practitioners in California

Ruke Wang

Reg. 67841

Patent attorney

1Life Healthcare, Inc.

San Francisco, CA · 94111

415-578-3100

Ruoyu R Wang

Reg. 63395

Patent attorney

Kirkland & Ellis LLP

Palo Alto, CA · 94304

650-859-7000

Shihning Wang

Reg. 67489

Patent attorney

Premium Attorneys-at-Law

West Covina, CA · 91790

626-592-5901

Shyh-Jye Wang

Reg. 53741

Patent agent

Manatt, Phelps & Phillips, LLP

Costa Mesa, CA · 92626

714-371-2500

Siyu Wang

Reg. 83927

Patent attorney

Stanislaus County Public Defender's Office

Modesto, CA · 95354

209-525-4200

Songfong T Wang

Reg. 63122

Patent attorney

Wang IP Law Group, P.C.

City of Industry, CA · 91748

626-269-6753

Stephanie X Wang

Reg. 67004

Patent attorney

GRAIL Inc

Menlo Park, CA · 94025

650-542-0372

Susan L Wang

Reg. 53742

Patent attorney

Pfizer, Inc.

South San Francisco, CA · 94080

650-615-7339

Thomas A Wang

Reg. 54523

Patent attorney

Redwood Legal Group, P.C.

San Francisco, CA · 94104

650-714-3451

Tina T. Wang

Reg. 64265

Patent attorney

NVIDIA

Santa Clara, CA · 95050-2519

408-486-2000

Tsueh-Hua J Wang

Reg. 64207

Patent attorney

Canon USA

Irvine, CA · 92618-3731

949-932-3119

William L Wang

Reg. 39871

Patent attorney

William L. Wang, Esq.

Truckee, CA · 96161

650-380-2307

Xiang Wang

Reg. 45547

Patent attorney

Orrick, Herrington & Sutcliffe LLP

Irvine, CA · 92614-8255

650-614-7400

Xiaoyan Wang

Reg. 79046

Patent attorney

Knobbe Martens Olsen & Bear LLP

Irvine, CA · 92614

949-760-0404

Xing Wang

Reg. 61409

Patent agent

Alston & Bird LLP

Menlo Park, CA · 94025

650-838-2000

Yan Wang

Reg. 69793

Patent agent

Nokia

Sunnyvale, CA · 94086

650-521-7419

Yanli Wang

Reg. 63715

Patent agent

San Diego, CA · 92130

858-523-0186

Yimin Wang

Reg. 59547

Patent attorney

Norman International, Inc.

Santa Fe Springs, CA · 90670

562-644-5376

Ying Wang

Reg. 63786

Patent attorney

ARUBA NETWORKS, INC

Sunnyvale, CA · 94089

408-419-4172

Ying Wang

Reg. 83876

Patent agent

Campbell, CA · 95008

571-315-1228

Yingli Wang

Reg. 67372

Patent attorney

Perkins Coie LLP

Los Angeles, CA · 90067

310-788-3348

Yong Wang

Reg. 67762

Patent agent

Argusina Inc

San Diego, CA · 92121

858-309-2549

Yu-Mei Eureka Wang

Reg. 50510

Patent attorney

Bristol-Myers Squibb Company

Milpitas, CA · 95035

408-545-5933

Yuan-Hsi Wang

Reg. 84626

Patent agent

South Pasadena, CA · 91030

336-779-4371

Yuanwei Wang

Reg. 80628

Patent agent

Yuanwei Wang

San Jose, CA · 95133

310-897-8305

Yue Wang

Reg. 72578

Patent attorney

Reichman Jorgensen Lehman & Feldberg LLP

Redwood Shores, CA · 94065

650-623-5072

Zhaohui Wang

Reg. 54674

Patent attorney

Jun He Law Office P.C.

Palo Alto, CA · 94303

650-265-2687

Zimu Wang

Reg. 83611

Patent agent

McNeill PLLC

San Diego, CA · 92108

561-306-7465

Emily Lau Ward

Reg. 35929

Patent attorney

Belmont, CA · 94002

650-740-1842

John S Ward

Reg. 55712

Patent agent

Redwood City, CA · 94065

650-654-5260

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.