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 One LLP, Polygon IP, LLP, and Steven H. Kuhn, Attorney-at-Law.

Top cities in California

All practitioners in California

Anthony C Kuhlmann

Reg. 57147

Patent attorney

One LLP

San Diego, CA · 92130

949-432-9997

Jeffrey M Kuhn

Reg. 66393

Patent attorney

Polygon IP, LLP

Walnut Creek, CA · 94597

650-226-4351

Steven H. Kuhn

Reg. 67540

Patent attorney

Steven H. Kuhn, Attorney-at-Law

San Jose, CA · 95126

408-307-8672

Luke W. Kuipers

Reg. 71763

Patent attorney

Fitbit, Inc.

San Francisco, CA · 94105

310-743-3275

Matthew C. Kuipers

Reg. 73266

Patent agent

Schwegman, Lundberg & Woessner, P.A.

San Jose, CA · 95113

415-489-3847

David P Kujawa

Reg. 66857

Patent attorney

Sanford Laboratories for Innovative Medicines

San Diego, CA · 92121

858-326-5227

Nadzeya Kukhta

Reg. 83410

Patent agent

Dentons US LLP

Oakland, CA · 94612

415-882-0153

Carl A Kukkonen· III

Reg. 42773

Patent attorney

Jones Day

San Diego, CA · 92121

858-314-1178

Jonathan E. Kukowski

Reg. 77072

Patent agent

San Diego, CA · 92130

218-791-1313

Charles John Kulas

Reg. 35809

Patent attorney

Trellis Intellectual Property Law Group, PC

Palo Alto, CA · 94303

650-842-0300

Malgorzata A Kulczycka

Reg. 50496

Patent attorney

Hickman Palerno Becker Bingham LLP

San Jose, CA · 95113

408-414-1228

Laura Kulhanjian

Reg. 33257

Patent attorney

Ross, CA · 94957

415-454-8700

Abhay Mohan Kulkarni

Reg. 66017

Patent attorney

Irvine, CA · 92620

323-934-2300

Rashmi Kulkarni

Reg. 70990

Patent agent

Menlo Park, CA · 94025

408-219-5685

Sunil R Kulkarni

Reg. 43731

Patent attorney

University of California

Oakland, CA · 94607

510-987-9800

Andrew A Kumamoto

Reg. 40690

Patent attorney

HelixIP LLP

San Carlos, CA · 94070

650-517-3101

Don F Kumamoto

Reg. 41917

Patent attorney

Sunnyvale, CA · 94087

408-393-5486

Abhay Kumar

Reg. 52536

Patent agent

Invitrogen Corporation

Carlsbad, CA · 92008

760-476-6198

Edwin A Kumar

Reg. 70262

Patent agent

San Bruno, CA · 94066

415-713-9559

Rachana A Kumar

Reg. 79594

Patent agent

San Jose, CA · 95130

206-902-7376

Rakhi Kumar

Reg. 78429

Patent agent

Laguna Hills, CA · 92653

949-705-8757

Ken D Kumayama

Reg. 72586

Patent attorney

Skadden, Arps, Slate, Meagher and Flom LLP

Palo Alto, CA · 94301

650-470-4553

Hari P Kunamneni

Reg. 62073

Patent agent

Cupertino, CA · 95014

408-417-0783

Johnson K. Kuncheria

Reg. 69093

Patent attorney

Fenwick & West LLP

Mountain View, CA · 94041

650-335-4919

Douglas Andrew Kundrat

Reg. 30275

Patent attorney

Mountain View, CA · 94040

650-515-1810

Stephen Michael Ian Kunen

Reg. 69432

Patent attorney

Palo Alto Networks, Inc.

Santa Clara, CA · 95054

917-575-7598

Simon F Kung

Reg. 68241

Patent attorney

ArentFox Schiff LLP

San Francisco, CA · 94104

415-757-5910

Viola T Kung

Reg. 41131

Patent attorney

Perkins Coie LLP

Palo Alto, CA · 94304

650-838-4457

Benjamin Ping-Lun Kuo

Reg. 66207

Patent attorney

Arcadia, CA · 91066

213-290-2586

Chao-Ling Kuo

Reg. 71256

Patent agent

Cerritos, CA · 90703

646-673-0473

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.