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 Kirkland & Ellis LLP, Law Office of Victor Huang, and Cooley, LLP.

Top cities in California

All practitioners in California

Terry N Huang

Reg. 66423

Patent attorney

Kirkland & Ellis LLP

Los Angeles, CA · 90071

213-680-8145

Victor Huang

Reg. 60050

Patent attorney

Law Office of Victor Huang

Dublin, CA · 94568

510-305-2366

Wenrong Huang

Reg. 58012

Patent attorney

Campbell, CA · 95008

408-318-7183

Yuanhui Huang

Reg. 73070

Patent agent

Dublin, CA · 94568

626-715-9185

Joanna Liebes Hubberts

Reg. 71499

Patent attorney

Cooley, LLP

Palo Alto, CA · 94304-1130

650-843-5098

Linda Boi Huber

Reg. 56461

Patent attorney

Nixon Peabody LLP

Los Angeles, CA · 90071-3151

213-629-6000

Susan T Hubl

Reg. 47668

Patent agent

GENENTECH, INC

South San Francisco, CA · 94080

650-763-7326

Shehzad K Huda

Reg. 68661

Patent agent

Irvine, CA · 92618

951-743-2746

Jessica A Hudak

Reg. 61085

Patent attorney

Edwards Lifesciences Corp.

Irvine, CA · 92614

949-250-8921

Benjamin F Hudson

Reg. 71474

Patent agent

Pillsbury Winthrop Shaw Pittman LLP

San Diego, CA · 92130-4088

858-847-4105

Mark R. Huebscher

Reg. 60796

Patent attorney

San Diego, CA · 92129

619-249-4598

Pablo S. Huerta

Reg. 66205

Patent attorney

Cathedral City, CA · 92234

415-728-7147

Russell T Huffman

Reg. 63999

Patent agent

Self

Burlingame, CA · 94010

650-996-7079

Casey R. Huffmire

Reg. 60085

Patent attorney

Canon U.S.A.

Irvine, CA · 92612-2426

949-932-3188

Curtis R Huffmire

Reg. 48877

Patent attorney

Knobbe, Martens, Olsen & Bear LLP

Irvine, CA · 92614

949-760-0404

Anne E Huffsmith

Reg. 57041

Patent attorney

Napa, CA · 94558

415-938-7453

Colin O. Hughes

Reg. 72172

Patent attorney

Neurocrine Biosciences, Inc.

San Diego, CA · 92130

858-354-7752

Daniel P. Hughes

Reg. 76592

Patent attorney

Knobbe Martens Olson & Bear LLP

Irvine, CA · 92614

858-707-4000

Melya Jane Hughes

Reg. 38696

Patent agent

Poway, CA · 92064

650-862-8452

Benjamin Hong Huh

Reg. 61207

Patent attorney

CrowdStrike, Inc.

Sunnyvale, CA · 94086

188-851-28906

Natalie Charlie Huh

Reg. 77738

Patent attorney

Quinn Emanuel Urquhart & Sullivan, LLP

Redwood City, CA · 94065

650-801-5121

Raymond M Huie

Reg. 61489

Patent attorney

San Francisco, CA · 94121

415-418-0016

Wade Stuart Hulac

Reg. 50741

Patent agent

Chino Hills, CA · 91709

714-961-0492

Amy L Hulina

Reg. 41556

Patent agent

Watson Pharmaceuticals, Inc.

Corona, CA · 92880

951-493-5956

George Z Hull· IV

Reg. 68856

Patent agent

Santa Clara, CA · 95050

408-905-9022

Hans P Hull

Reg. 54192

Patent agent

Avalanche Biotechnologies, Inc.

Menlo Park, CA · 94025

415-772-6000

Jonathan J. Hull

Reg. 73086

Patent agent

San Carlos, CA · 94070

650-496-5719

Kathryn K Hull

Reg. 57115

Patent attorney

Illumina, Inc.

San Diego, CA · 92122

858-208-3913

Matthew R Hulse

Reg. 44786

Patent attorney

Cerebras Systems Inc.

Sunnyvale, CA · 94085

408-585-5205

Robert A Hulse

Reg. 48473

Patent attorney

Fenwick & West LLP

Mountain View, CA · 94041

415-875-2444

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.