California

Patent attorneys in California

California hosts 9,567 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 Procopio, Kirkland & Ellis, and Innovation Counsel LLP.

Top cities in California

All practitioners in California

Jonas J. Hodges

Reg. 58898

Patent attorney

Procopio

Irvine, CA · 92618

949-468-1346

Frank L Hodgson

Reg. 68907

Patent agent

Portola Valley, CA · 94028

650-529-1121

Matthew S. Hodgson

Reg. 76910

Patent attorney

Kirkland & Ellis

Los Angeles, CA · 90071

831-236-2574

Serge J Hodgson

Reg. 40017

Patent attorney

Innovation Counsel LLP

San Jose, CA · 95134

831-920-4171

Craig R. Hodulik

Reg. 60200

Patent attorney

San Diego, CA · 92126

858-405-5431

Jens Edward Hoekendijk

Reg. 37149

Patent attorney

Law Office of Jens Hoekendijk

Burlingame, CA · 94011-4787

415-412-3322

Doneil J Hoekman

Reg. 53026

Patent attorney

Santa Clara, CA · 95055

408-509-7921

Quin C Hoellwarth

Reg. 45738

Patent agent

Apple Inc.

Cupertino, CA · 95014

208-922-3571

Gary Hoenig

Reg. 46776

Patent attorney

Santa Rosa, CA · 95405

707-545-0900

Howard Leslie Hoffenberg

Reg. 32239

Patent attorney

IP and Business Law Offices of Howard L. Hoffenberg, Esq.

Los Angeles, CA · 90024

310-670-5825

Brian M Hoffman

Reg. 39713

Patent attorney

Fenwick & West LLP

Mountain View, CA · 94041

415-875-2484

David Lee Hoffman

Reg. 32469

Patent attorney

Nolan Heimann LLP

Encino, CA · 91436

818-574-5710

David Carter Hoffman

Reg. 59821

Patent attorney

DCH IP Consulting

Los Gatos, CA · 95030

650-862-0392

Edward Eric Hoffman

Reg. 38186

Patent attorney

Bever Hoffman & Harms LLP

Livermore, CA · 94550

925-895-3545

Michael E Hoffman

Reg. 47656

Patent attorney

Encino, CA · 91316

818-343-5353

Benjamin J Hofilena

Reg. 53028

Patent attorney

Orrick, Harrington, & Sutcliffe LLP

Los Angeles, CA · 90017-5855

213-612-2430

Heath W Hoglund

Reg. 41076

Patent attorney

Dolby Laboratories

San Francisco, CA · 94103

415-645-5115

Christopher A Hohn

Reg. 77179

Patent attorney

Hopkins &Carley, a Law Corporation

San Jose, CA · 95113

408-286-9800

Aaron T Hokamura

Reg. 51810

Patent agent

Iovance Biotherapeutics, Inc.

San Carlos, CA · 94070

650-260-7120

Jon Edwin Hokanson

Reg. 30069

Patent attorney

Lewis Brisbois Bisgaard & Smith LLP

Los Angeles, CA · 90012

213-250-1800

Luke D. Holbrook

Reg. 79325

Patent attorney

Fenwick and West

Mountain View, CA · 94041

650-988-8500

Willmore F Holbrow· III

Reg. 41845

Patent attorney

Buchalter Corp.

Los Angeles, CA · 90017

213-891-0700

Paul S Holdaway

Reg. 56376

Patent attorney

Qualcomm, Inc.

San Diego, CA · 92121

858-651-8669

Emily R. W. Holden

Reg. 83332

Patent agent

Sunnyvale, CA · 94087

408-736-0228

Xue B Holdman

Reg. 72903

Patent attorney

Wilson Sonsini Goodrich & Rosati

Palo Alto, CA · 94304

617-598-7883

Michael L Holihan

Reg. 78906

Patent attorney

Naval Information Warfare Center Pacific

San Diego, CA · 92152

919-961-3510

Charles David Holland

Reg. 35196

Patent agent

Holland Patent

Palm Desert, CA · 92211

165-043-48410

Christopher Todd Holland

Reg. 36551

Patent attorney

Holland Law, LLP

San Francisco, CA · 94104

415-200-4980

J Mark Holland

Reg. 32416

Patent attorney

J. Mark Holland & Associates

Irvine, CA · 92612

949-718-6750

Lori L Holland

Reg. 48474

Patent attorney

Holland Law LLP

San Francisco, CA · 94104

415-200-4980

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?

9,567 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.