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 Edwards Lifesciences, The Rubicon Project, and Haynes and Boone, LLP.

Top cities in California

All practitioners in California

Melinda R. Michalerya

Reg. 59654

Patent attorney

Edwards Lifesciences

Irvine, CA · 92614

949-250-6801

Laura B Michel

Reg. 68798

Patent attorney

The Rubicon Project

Playa Vista, CA · 90094

Gregory J Michelson

Reg. 44940

Patent attorney

Haynes and Boone, LLP

Costa Mesa, CA · 92626

949-202-3000

David C. Michie

Reg. 77116

Patent attorney

Oxnard, CA · 93035

805-806-0640

Andrew D Mickelsen

Reg. 50957

Patent attorney

Mickelsen Intellectual Property

Rancho Santa Margarita, CA · 92688

949-525-5121

Charles K Middleton

Reg. 60275

Patent attorney

Xperi Corporation

San Jose, CA · 95134

408-321-6707

Derek L. Midkiff

Reg. 70142

Patent agent

Gazdzinski & Associates PC

San Diego, CA · 92101

858-675-1670

Samantha R Midkiff

Reg. 72283

Patent attorney

Berkeley, CA · 94703

415-857-2544

Jason R. Midyett

Reg. 65860

Patent agent

Yorba Linda, CA · 92886

714-457-3951

Larisa Migachyov

Reg. 57791

Patent attorney

San Francisco, CA · 94126-2061

800-478-3907

Frank J Mihail

Reg. 67962

Patent agent

Los Angeles, CA · 90034

310-204-0100

Danielle M. Mihalkanin

Reg. 69506

Patent attorney

Belmont, CA · 94002

925-922-4400

Cathleen A Miick

Reg. 57902

Patent agent

San Francisco, CA · 94122

415-336-0105

Shebli Mikailli

Reg. 70401

Patent attorney

Snap Inc.

San Francisco, CA · 94133

408-605-1551

Peter G Mikhail

Reg. 46930

Patent attorney

Weaver Austin Villeneuve & Sampson LLP

Oakland, CA · 94607

510-663-1100

Naoki Miki

Reg. 54312

Patent agent

Law Office of Katsuhiro Arai

Lake Forest, CA · 92630

949-457-8296

Jeffrey J Mikrut

Reg. 69818

Patent attorney

Illumina Inc.

San Diego, CA · 92122

602-909-2936

Dmitry R Milikovsky

Reg. 41999

Patent attorney

Qualcomm Incorporated

San Diego, CA · 92121

858-845-0130

James A. Milkey

Reg. 79503

Patent attorney

Noroozi PC

Los Angeles, CA · 90024

310-975-7074

William Claude Milks· III

Reg. 28445

Patent attorney

Law Offices of William C. Milks, III

Palo Alto, CA · 94303

650-930-6780

James H Millane

Reg. 44240

Patent attorney

Brady Vorwerck and Ryder

Orange, CA · 92868

714-703-2111 X213

Birgit Millauer

Reg. 43341

Patent attorney

San Francisco, CA · 94114

415-810-4873

Audrey A Millemann

Reg. 44942

Patent attorney

Weintraub Genshlea and Sproul Law, Corp.

Sacramento, CA · 95814

916-558-6033

Brian N Miller

Reg. 70764

Patent attorney

HICKMAN PALERMO BECKER BINGHAM LLP

San Jose, CA · 95113

408-414-1207

D. Byron Miller· Jr

Reg. 30661

Patent attorney

D. Byron Miller, IP Consulting

Los Altos, CA · 94022

408-712-4108

David H. Miller

Reg. 79381

Patent attorney

Santa Clarita, CA · 91350

480-262-6332

Dennis D Miller

Reg. 32159

Patent attorney

Stein and Lubin, LLP

San Francisco, CA · 94111

415-981-0550

Elizabeth Cary Miller

Reg. 54708

Patent agent

Jones Day

San Diego, CA · 92121

858-314-1122

Greg R Miller

Reg. 40727

Patent attorney

Miller & Hieb

Torrance, CA · 90501

310-994-4496

Jeffrey Andrew Miller

Reg. 35287

Patent attorney

Arnold & Porter Kaye Scholer LLP

Palo Alto, CA · 94306

650-319-4538

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.