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 City Of Los Angeles, Wilson Sonsini Goodrich & Rosati, and SMIP, LLC.

Top cities in California

All practitioners in California

Ty T Ung

Reg. 55693

Patent agent

Los Angeles, CA · 90026

213-481-2257

Frank S Ungemach

Reg. 34449

Patent attorney

Moorpark, CA · 93021

805-532-0068

Robert M Unruh

Reg. 30431

Patent attorney

City Of Los Angeles

Los Angeles, CA · 90012

213-473-9017

Saikrishna Upadhyayula

Reg. 75569

Patent attorney

Wilson Sonsini Goodrich & Rosati

San Diego, CA · 92130-3002

858-350-2277

Ravindra B Upasani

Reg. 53712

Patent agent

SMIP, LLC

San Jose, CA · 95148

408-313-8817

Sharon N Upham

Reg. 43357

Patent agent

Restoration Robotics.Inc.

San Jose, CA · 95134

408-883-6779

Lauren M Upp

Reg. 78087

Patent agent

YHE Law LLP

Lafayette, CA · 94549

415-612-9463

Jyotirmai Uppuluri

Reg. 75399

Patent attorney

Discord Inc.

San Francisco, CA · 94107

415-475-9684

Guy V Urata

Reg. 39051

Patent agent

Oxnard, CA · 93031

805-988-8876

Woli I. Urbe

Reg. 79879

Patent attorney

Squire Patton Boggs (US) LLP

Palo Alto, CA · 94304

650-843-3323

Stephen R Uriarte

Reg. 40854

Patent attorney

Uriarte Law

Santa Clara, CA · 95051

408-256-0244

Jon Ustundag

Reg. 78915

Patent attorney

Atkinson, Andelson, Loya, Ruud & Romo

Cerritos, CA · 90703

562-653-3472

Tom Ustundag

Reg. 84487

Patent agent

Costa Mesa, CA · 92627

408-832-2887

Frank J Uxa· Jr

Reg. 25612

Patent attorney

Stout, Uxa, Buyan & Mullins LLP

Irvine, CA · 92618

949-450-1750

Katrina J. Uy

Reg. 80521

Patent agent

Hercules, CA · 94547

510-833-0224

Ruthleen E Uy

Reg. 51361

Patent attorney

Kilpatrick Townsend & Stockton LLP

San Diego, CA · 92130

858-350-3870

Ali M Uyanik

Reg. 67080

Patent agent

Procopio, Cory, Hargreaves & Savitch LLP

Palo Alto, CA · 94306

650-645-9002

Allen H Uzzell

Reg. 27602

Patent attorney

Attorney at Law

Alamo, CA · 94507

925-362-8345

Devin R. Vaage

Reg. 77726

Patent attorney

Roeder & Broder LLP

San Diego, CA · 92116

858-635-2142

Andra M Vaccaro

Reg. 28604

Patent attorney

Law Offices Of Andra M Vaccaro

Los Angeles, CA · 90064

310-202-7772

Hristo I Vachovsky

Reg. 55694

Patent attorney

Los Angeles, CA · 90026

Santhosh K Vadivelu

Reg. 65557

Patent agent

Canaan Partners

Menlo Park, CA · 94025

650-278-6683

Damond E Vadnais

Reg. 52310

Patent attorney

Mahesh Law Group

Irvine, CA · 92618

530-400-9246

Allison Kay Nelson Vagner

Reg. 67758

Patent agent

Davis Wright Tremaine LLP

Los Angeles, CA · 90017

425-442-0291

Hema Vakharia-Rao

Reg. 65182

Patent agent

Nixon Peabody LLP

Los Angeles, CA · 90071-3151

213-629-6000

Ketan S Vakil

Reg. 43215

Patent attorney

Snell & Wilmer, LLP

Costa Mesa, CA · 92626

714-427-7405

Kamran Vakili

Reg. 64825

Patent attorney

Irell & Manella LLP

Newport Beach, CA · 92660

949-760-5151

Alexandra L Valadez

Reg. 79043

Patent attorney

Nicholson De Vos Webster & Elliot LLP

San Jose, CA · 95113

408-663-2429

Ramoncito M Valencia

Reg. 50309

Patent agent

Peregrine Pharmaceuticals, Inc.

Tustin, CA · 92780

714-508-6051

James F Valentine

Reg. 39053

Patent attorney

PERKINS COIE LLP

Palo Alto, CA · 94304-1212

650-838-4469

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.