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, Illumina Inc., and Fenwick & West LLP.

Top cities in California

All practitioners in California

Ali Shalchi

Reg. 52210

Patent attorney

Illumina Inc.

San Diego, CA · 92122

949-357-5068

Saina S Shamilov

Reg. 48266

Patent attorney

Fenwick & West LLP

Mountain View, CA · 94041

650-988-8500

Ali Reza Shamshiri Rad

Reg. 64363

Patent attorney

Law Office of Alex Rad

PLEASANTON, CA · 94588

925-399-8079

Pengju Shang

Reg. 80050

Patent attorney

Sheppard Mullin Richter & Hampton, LLP

Palo Alto, CA · 94301

650-815-2600

Roger Q Shang

Reg. 50740

Patent attorney

Alibaba Group

San Mateo, CA · 94402

650-868-0566

Mary E Shannon

Reg. 45094

Patent attorney

LinkedIn Corporation

Mountain View, CA · 94043

650-567-0660

Kevin G Shao

Reg. 45095

Patent attorney

Womble Bond Dickinson LLP

Palo Alto, CA · 94304

408-341-3000

Ruoxi Shao

Reg. 76973

Patent attorney

Santa Clara, CA · 95050

814-502-8150

David J Shapiro

Reg. 64960

Patent attorney

San Diego, CA · 92122

818-288-0507

Joseph M. Shapiro

Reg. 66774

Patent attorney

Wilson Sonsini Goodrich & Rosati

Los Angeles, CA · 90071

323-210-2900

Steven E Shapiro

Reg. 35676

Patent attorney

Santa Monica, CA · 90402

310-428-4776

Milad G Shara

Reg. 39367

Patent attorney

Wheatstone IP Law Corporation

Laguna Niguel, CA · 92677

949-981-4453

Behrooz Shariati

Reg. 40254

Patent attorney

Mighty Buildings, Inc

Oakland, CA · 94261

650-352-3443

Amar K. Sharma

Reg. 83023

Patent agent

San Francisco, CA · 94158

415-867-9739

Anupam Sharma

Reg. 55609

Patent attorney

Covington & Burling LLP

Redwood Shores, CA · 94025-1418

650-632-4709

Heena Sharma

Reg. L1165

Limited recognition

Alfred Mann Foundation

Valencia, CA · 91355

650-495-6992

Mukund H Sharma

Reg. 64692

Patent attorney

Align Technology

San Jose, CA · 95134

408-470-1273

Rutawari Sharma

Reg. 75711

Patent agent

Shay Glenn LLP

San Mateo, CA · 94403

650-287-2174

Sanjesh P Sharma

Reg. 65054

Patent attorney

Johnson & Johnson Vision

Santa Ana, CA · 92705

714-247-8877

Swati T Sharma

Reg. 76891

Patent agent

Wilson Sonsini Goodrich & Rosati

Palo Alto, CA · 94304

650-849-3055

Gregg Steven Sharp

Reg. 47076

Patent attorney

Naval Surface Warfare Center

Port Hueneme, CA · 93043-4307

805-228-6292

Janice Anne Sharp

Reg. 34051

Patent attorney

Pasadena, CA · 91105

626-577-5728

Sayuri K Sharper

Reg. 67680

Patent attorney

Los Altos, CA · 94024

650-968-6583

Robert J Shartle

Reg. 52212

Patent agent

Livermore, CA · 94551

213-434-3751

Cheryl Lynn Shavers

Reg. 31303

Patent agent

Santa Clara, CA · 95051

408-246-1002

Brian Shaw

Reg. 52213

Patent attorney

Brian Shaw

Irvine, CA · 92602

213-430-6000

Laurence J Shaw

Reg. 34723

Patent agent

Integral Patent

San Francisco, CA · 94118

415-812-6203

Melissa A Shaw

Reg. 38301

Patent attorney

Annexon Biosciences

South San Francisco, CA · 94080

650-822-5528

Nathan M Shaw

Reg. 76013

Patent attorney

Jeffer Mangels Butler & Mitchell LLP

Los Angeles, CA · 90067

310-712-6842

Philip Morton Shaw· Jr

Reg. 25376

Patent attorney

Mill Valley, CA · 94941-2004

415-385-5900

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.