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 Parker Stanbury, LLP, Apple Inc., and Sardesai.

Top cities in California

All practitioners in California

Reynaldo C Santos

Reg. 46173

Patent attorney

Parker Stanbury, LLP

Los Angeles, CA · 90071

213-622-5124

Buyung Santoso

Reg. 60015

Patent agent

San Diego, CA · 92122

619-243-4952

Reza Sarbakhsh

Reg. 69981

Patent attorney

Apple Inc.

Cupertino, CA · 95014

408-996-1010

Rajendra Gurandas Sardesai

Reg. 39825

Patent attorney

Sardesai

Arcadia, CA · 91006

626-688-2568

Gregory A Sargenti

Reg. 61406

Patent attorney

Murchison & Cumming LLP

Irvine, CA · 92612-1077

714-972-9977

Valerie L Sarigumba

Reg. 55594

Patent attorney

In-N-Out Burgers

Irvine, CA · 92612

949-509-6291

David S Sarisky

Reg. 41288

Patent attorney

LOZA & LOZA, LLP

Upland, CA · 91786

714-453-9824

Nivedina A Sarma

Reg. 84868

Patent agent

Desmarais LLP

San Francisco, CA · 94111

469-307-2786

Puneet S Sarna

Reg. 68452

Patent attorney

LinkedIn Corporation

Mountain View, CA · 94043

408-604-6615

Maria Erlinda CO Sarno

Reg. 37436

Patent attorney

Law Office Of Maria Erlinda C Sarno

Artesia, CA · 90702

562-402-0418

Mark J Sarno

Reg. 67363

Patent agent

Vision Biotechnology Consulting

Escondido, CA · 92026

760-815-4086

Joseph Sarnowski

Reg. 63740

Patent attorney

Legacy Financial Consulting, LLC

Corona, CA · 92879

951--73-7-3228

M. Kala Sarvaiya

Reg. 58912

Patent attorney

Law Offices of Meenakshi Kala Sarvaiya

Westlake Village, CA · 91362

818-296-9325

Sophia Sarwar

Reg. 66081

Patent attorney

Rutan & Tucker, LLP

Costa Mesa, CA · 92626

714-641-3480

Linda L Sasaki-Baxley

Reg. 40799

Patent attorney

Howrey LLP

East Palo Alto, CA · 94303-2281

650-798-3300

Ronald John Sasiela

Reg. 29344

Patent agent

Sasiela & Associates, LLC

Los Angeles, CA · 90067

410-463-1061

Eric K Satermo

Reg. 40159

Patent agent

Satermo IP Consulting LLC

Coto de Caza, CA · 92679

949-923-8681

Vinay P Sathe

Reg. 55595

Patent attorney

Ashurst Perkins Cole LLP

San Diego, CA · 92130-2594

858-720-5736

Susan K Sather

Reg. 44316

Patent agent

Alston & Bird

East Palo Alto, CA · 94303-2282

650-838-2069

Purva Charu Satia

Reg. 67549

Patent agent

Los Gatos, CA · 95032

408-356-2981

Greg Y Sato

Reg. 43085

Patent attorney

San Jose, CA · 95129

408-446-8449

Ryusuke Satoh

Reg. L0724

Limited recognition

Kyocera International, Inc

San Diego, CA · 92123-1580

858-882-2000

Michael A Sauer

Reg. 58801

Patent attorney

Scorpion

Valencia, CA · 91355

661-210-7225

Hsiu-Ming Huang Saunders

Reg. 47055

Patent attorney

Palo Alto, CA · 94306

650-557-4464

James M Saunders

Reg. 64498

Patent attorney

NAWCWD

China Lake, CA · 93555-6100

858-978-1953

Emily K. Sauter

Reg. 67031

Patent attorney

Knobbe Martens Olson & Bear

Irvine, CA · 92614

949-721-5341

Thad T. Sauter

Reg. 76325

Patent agent

Los Gates, CA · 95032

408-348-9339

Jimmy M Sauz

Reg. 66939

Patent attorney

Naval Facilities Engineering and Expeditionary Warfare Center

Port Hueneme, CA · 93043-4370

805-982-2831

Mohammad R Savari

Reg. 47920

Patent attorney

Roche Molecular System, Inc.

Pleasanton, CA · 94588

925-730-8560

Margaux A Savee

Reg. 62940

Patent attorney

Dropbox, Inc.

San Francisco, CA · 94158

415-471-0271

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.