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 Apple Inc., DANE IP Law PC, and Wilson Sonsini Goodrich Rosati.

Top cities in California

All practitioners in California

James E Yang

Reg. 48050

Patent agent

Apple Inc.

Cupertino, CA · 95014

408-000-0000

James C Yang

Reg. 54556

Patent attorney

DANE IP Law PC

Anaheim, CA · 92801

949-688-1663

Jane Yang

Reg. 81506

Patent agent

Wilson Sonsini Goodrich Rosati

Los Angeles, CA · 90067

858-945-6975

Jeanne Yang

Reg. 67202

Patent attorney

Bowles & Verna LLP

Walnut Creek, CA · 94596

925-935-3300

Jian Yang

Reg. 80269

Patent agent

San Deigo, CA · 92130

517-449-7824

Jian Yang

Reg. 57387

Patent agent

San Jose, CA · 95117

408-393-4591

Jie Yang

Reg. 82455

Patent agent

Castro Valley, CA · 94552

216-225-3535

Jinping Yang

Reg. 72793

Patent attorney

Lam Research Corporation

Fremont, CA · 94538

510-572-4780

Joseph Yang

Reg. 41387

Patent attorney

PatentEsque Law Group, LLP

Los Altos, CA · 94023

650-233-0822

Junrui Yang

Reg. 48051

Patent agent

FibroGen, Inc.

San Francisco, CA · 94158

415-978-1749

Kay Yang

Reg. 61072

Patent agent

La Jolla, CA · 92037

562-217-9699

Ke Yang

Reg. 81989

Patent agent

Morrison & Foerster, LLP

San Diego, CA · 92130-2040

650-420-9752

Kevin Han Yang

Reg. 81215

Patent attorney

Munger, Tolles & Olson LLP

San Francisco, CA · 94105

415-512-4047

Kunyong Yang

Reg. 64629

Patent attorney

Jones Day

San Diego, CA · 92121

858-314-1148

Lan Yang

Reg. 44416

Patent agent

San Jose, CA · 95135

408-318-3518

Lance L Yang

Reg. 57388

Patent agent

Santa Monica, CA · 90405

408-306-5229

Liuchun Yang

Reg. 69330

Patent attorney

Gilead Sciences, Inc.

Foster City, CA · 94404

650-524-4341

Long Yang

Reg. 79092

Patent agent

Herbert Smith Freehills Kramer (US) LLP

Redwood Shores, CA · 94065

650-752-1739

Louis Yang

Reg. 79056

Patent attorney

Perkins Coie

Palo Alto, CA · 94304

650-838-4733

Lute Yang

Reg. 79253

Patent attorney

Orrick Herrington & Sutcliffe LLP

San Franscico, CA · 94105-2669

415-773-5424

Michelle W Yang

Reg. 52510

Patent attorney

Samsung Information Systems America, Inc

San Jose, CA · 95134

408-544-5841

Ming Tao Yang

Reg. 62019

Patent attorney

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Palo Alto, CA · 94304

650-849-6783

Neil L Yang

Reg. 57389

Patent agent

Santa Monica, CA · 90405

408-499-5993

Rong Yang

Reg. 60834

Patent agent

Baker Hostetler LLP

Costa Mesa, CA · 92626

714-966-3508

Roxana Hwu Yang

Reg. 46788

Patent attorney

Los Altos, CA · 94023

650-948-0822

Weining Yang

Reg. 38690

Patent attorney

Chen Yoshimura LLP

Los Angeles, CA · 90077

310-871-2598

Wendy W Yang

Reg. 53939

Patent attorney

Palo Alto, CA · 94301

650-204-8001 X535

Xiaofan Yang

Reg. 61459

Patent attorney

Procopio, Cory, Hargreaves & Savitch

San Diego, CA · 92130

858-480-8206

Yanling Yang

Reg. 72489

Patent attorney

QUALCOMM INCORPORATED

San Diego, CA · 92121

858-531-5684

Yu Yang

Reg. 68839

Patent attorney

Solidigm

San Jose, CA · 95134

279-895-9842

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.