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 Weaver Austin Villeneuve & Sampson LLP, NAVAIR-WD, and Sheppard Mullin.

Top cities in California

All practitioners in California

Keiichi Nishimura

Reg. 29093

Patent attorney

Weaver Austin Villeneuve & Sampson LLP

Oakland, CA · 94607

510-524-6196

Tsuneaki Nishimura

Reg. 66619

Patent agent

Anaheim, CA · 92808

714-276-4943

Stuart H Nissim

Reg. 33541

Patent attorney

NAVAIR-WD

China Lake, CA · 93555-6100

760-939-2824

Daniel J Nitzani

Reg. 51042

Patent attorney

S. Pasadena, CA · 91031

Briana F Niu

Reg. 82835

Patent attorney

Sheppard Mullin

Menlo Park, CA · 94025

650-462-5342

Feng Niu

Reg. 84723

Patent agent

San Diego, CA · 92129

858-349-8822

Lulu Niu

Reg. 800162

Limited recognition

BettaBot, Inc

Santa Fe Springs, CA · 90670

213-512-9727

Mark L Niu

Reg. 52075

Patent attorney

Irell and Manella LLP

Newport Beach, CA · 92660

949-760-0991

Sarah T Niyogi

Reg. 66655

Patent attorney

Morrison & Foerster LLP

San Francisco, CA · 94103

415-268-6512

Adam-Pierre Michael Noah

Reg. 45601

Patent attorney

Global Foundries

Milpitas, CA · 95035

408-462-4346

Todd Andrew Noah

Reg. 35626

Patent attorney

Dergosits & Noah, LLP

San Francisco, CA · 94111

415-705-6377

Brian K Nobe

Reg. 82624

Patent attorney

Redondo Beach, CA · 90278

424-241-0289

James E Noble

Reg. 26211

Patent attorney

Yuba City, CA · 95992

530-673-1779

Lisa D Noble

Reg. 40103

Patent attorney

San Carlos, CA · 94070

650-631-8284

Kimberley Germaine Yen Leng Nobles

Reg. 38255

Patent attorney

Gordon & Rees LLP

Irvine, CA · 92612

949-255-6998

Hee Min Noh

Reg. 79700

Patent attorney

Wilson Sonsini Goodrich & Rosati

San Diego, CA · 92130-3002

858-350-2310

Jerry Jun H Noh

Reg. 44263

Patent attorney

Tailored Brands

Dublin, CA · 94568

213-762-4021

Saxon Seol Noh

Reg. 47827

Patent attorney

Wing Aviation LLC

Mountain View, CA · 94044

408-990-3838

Brent P Nolan

Reg. 77165

Patent attorney

San Diego, CA · 92108

949-702-1403

James S Nolan

Reg. 53393

Patent attorney

Bozicevic, Field & Francis LLP

East Palo Alto, CA · 94303

650-327-3400

Anson M Nomura

Reg. 67064

Patent agent

San Diego, CA · 92121

858-997-3279

Ian J Nomura

Reg. 66620

Patent attorney

Troutman Sanders LLP

San Francisco, CA · 94104

415-477-5756

Kazuo A Nomura

Reg. 53395

Patent agent

Muramatsu and Assocs

Irvine, CA · 92618

949-753-1127

Adele C Noon

Reg. 52077

Patent attorney

Noon Intellectual Property Law, PC

El Cajon, CA · 92019

619-566-6647

William H Noon

Reg. 64731

Patent attorney

Carlsbad, CA · 92009

619-201-1722

Heidi Wray Noonan

Reg. 78754

Patent agent

Sonoma, CA · 95476

707-338-9768

Martin M Noonen

Reg. 44264

Patent attorney

Morrison and Foerster, LLP

Los Angeles, CA · 90013

213-892-5764

Zachary A Nora

Reg. 80563

Patent agent

McNeill PLLC

San Diego, CA · 92108

609-262-7255

Michael David Nornberg

Reg. 46502

Patent attorney

USC Stevens Center for Innovation

Los Angeles, CA · 90015

213-821-0943

Laura Lee M Norris

Reg. 42886

Patent attorney

Laura Lee Norris, Attorney at Law

San Jose, CA · 95112

408-482-0345

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.