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 Sheppard, Mullin, Richter & Hampton LLP, Sanford Burnham Prebys Medical Discovery Institute, and Schwegman, Lundberg, Woessner.

Top cities in California

All practitioners in California

Michael H Vartanian

Reg. 56464

Patent agent

San Jose, CA · 95129

408-707-2225

Yvette M. Vaske

Reg. 71177

Patent agent

Sheppard, Mullin, Richter & Hampton LLP

Palo Alto, CA · 94301

650-815-2600

Victor C Vassar

Reg. 67878

Patent agent

Sanford Burnham Prebys Medical Discovery Institute

La Jolla, CA · 92037

858-231-0370

Jayasree Vasudevan

Reg. 62864

Patent agent

Anaheim, CA · 92808

714-281-1648

Mark R Vatuone

Reg. 53719

Patent attorney

Schwegman, Lundberg, Woessner

Gilroy, CA · 95020

408-846-8871

Daniel Eric Vaughan

Reg. 42199

Patent attorney

Park, Vaughan, Fleming & Dowler LLP

Davis, CA · 95618

530-759-1660

Susan V Vaughan

Reg. 57965

Patent attorney

Morrison & Foerster, LLP

Palo Alto, CA · 94304-1018

650-813-5600

Rachael Vaughn

Reg. 54469

Patent attorney

Roblox

San Mateo, CA · 94403

206-307-8543

Victoria L Vaughn

Reg. 71024

Patent agent

Westchester, CA · 90045

818-519-0206

Vicki S Veenker

Reg. 34269

Patent attorney

Veenker Law Offices

Palo Alto, CA · 94303

650-329-9797

Sriranga R. Veeraraghavan

Reg. 69513

Patent attorney

Womble Bond Dickinson (US) LLP

San Francisco, CA · 94111

415-765-6207

Keeley I Vega

Reg. 58117

Patent attorney

Thompson Hine LLP

San Mateo, CA · 94402

650-521-5939

Susana Vega Rocha

Reg. 77774

Patent agent

Redwood City, CA · 94061

916-294-5800

Stephen Z Vegh

Reg. 48550

Patent attorney

Stetina Brunda Garred & Brucker

Aliso Viejo, CA · 92656

949-855-1246

Jonathan T Velasco

Reg. 42200

Patent attorney

Qualcomm Incorporated

San Diego, CA · 92121

858-228-6229

Santiago Velez

Reg. 67648

Patent attorney

Hewlett Packard Enterprise

Palo Alto, CA · 93404

650-236-7616

Jared A Veliz

Reg. 77187

Patent attorney

Stradling Yocca Carlson & Rauth PC

Newport Beach, CA · 92660

949-725-4035

Matthew D Vella

Reg. 50204

Patent attorney

Prince Lobel Tye LLP

Laguna Beach, CA · 92651

949-232-6375

Shalini Venkatesh

Reg. 65514

Patent agent

Santa Clara, CA · 95051

408-828-3546

Nancy W Vensko

Reg. 36298

Patent attorney

Arroyo Grande, CA · 93420

805-710-0004

Polaphat Veravanich

Reg. 45179

Patent attorney

Cypress, CA · 90630

949-690-5103

Peter S Veregge

Reg. 55698

Patent attorney

Cislo & Thomas, LLP

Los Angeles, CA · 90025

310-451-0647

Ruchika Verma

Reg. 75879

Patent attorney

Fenwick & West LLP

Mountain View, CA · 94041

650-988-8500

Hana Verny

Reg. 30518

Patent attorney

Peters Verny, LLP

Palo Alto, CA · 94306

650-324-1677

Veronica G. Verplancken

Reg. 81311

Patent agent

Patterson Sheridan LLP

San Jose, CA · 95113

713-882-6277

Carol Talkington Verser

Reg. 37459

Patent agent

CytomX Therapeutics, Inc.

South San Francisco, CA · 94080

650-388-2059

Ralph R Veseli

Reg. 33807

Patent attorney

None, CA · 95070

408-000-0000

Paul P Vestal

Reg. 73635

Patent attorney

Roseville, CA · 95661

916-599-5016

Ryan W Vetter

Reg. 82483

Patent attorney

Yorba Linda, CA · 92887

714-305-8038

Joy E Vick

Reg. 54157

Patent agent

Los Angeles, CA · 90015

562-452-0191

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.