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 Wilson Sonsini Goodrich & Rosati, Maynard Cooper & Gale, and Morrison & Foerster LLP.

Top cities in California

All practitioners in California

Jacqueline D Relatores

Reg. 80517

Patent attorney

Maynard Cooper & Gale

Los Angeles, CA · 90067

310-596-4395

Jenne Liza V. Relucio

Reg. 71865

Patent agent

Stockton, CA · 95212

631-219-2616

Laura G Remus

Reg. 72239

Patent agent

Morrison & Foerster LLP

Los Angeles, CA · 90017

213-892-5200

Dingkun Ren

Reg. 84218

Patent attorney

Santa Clara, CA · 95050

424-653-4343

James J Ren

Reg. 70944

Patent attorney

Verkada Inc.

San Mateo, CA · 94401

650-781-4100

Pei Hsien Ren

Reg. 66432

Patent agent

Holland Law LLP

San Francisco, CA · 94104

415-200-4980

Song Ren

Reg. 61946

Patent agent

Fish & Richardson P.C.

Redwood City, CA · 94063

650-839-5070

Jeffrey W Rennecker

Reg. 40784

Patent attorney

Pfizer, Inc.

San Diego, CA · 92121

858-622-8850

August A Renshaw

Reg. 77626

Patent attorney

Wilson Sonsini Goodrich & Rosati

San Diego, CA · 92130

858-350-2349

Bryan E Repetto

Reg. 69322

Patent attorney

Repetto Law, P.C.

Redwood City, CA · 94065

650-632-4580

Rachel A Repka

Reg. 44970

Patent attorney

Deleon Realty

Palo Alto, CA · 94303

650-543-8520

Victor Repkin

Reg. 45039

Patent attorney

San Diego, CA · 92103

619-688-3002

Eric S Replogle

Reg. 52161

Patent attorney

Womble Bond Dickinson

Palo Alto, CA · 94304

408-720-3141

Diane M. Retallack

Reg. 77251

Patent agent

Primrose Bio, Inc.

San Diego, CA · 92121

858-352-4416

Patrick Gerard Reutens

Reg. 41432

Patent attorney

Mountain View, CA · 94042

408-896-9788

Kyle S. Reuther

Reg. 77371

Patent agent

Fenwick & West LLP

Mountain View, CA · 94041

650-335-7874

William Charles Revelos

Reg. 42101

Patent attorney

Insight Legal Services

Moraga, CA · 94556

925-388-0091

David J. Revolinski

Reg. 73938

Patent attorney

Dana Point, CA · 92629

702-985-7040

Clifford F Rey

Reg. 37920

Patent attorney

The Law Office of Clifford F. Rey

Sacramento, CA · 95825

916-628-9877

Gertrud U Rey

Reg. 72934

Patent agent

Mintz, Levin, Cohn, Ferris, Glovsky and Popeo

San Diego, CA · 92130

858-314-1565

Mario A Reyes

Reg. 53512

Patent agent

Heller Ehrman White and McAuliffe LLP

Menlo Park, CA · 94025

650-324-7000

David M Reynolds

Reg. 52164

Patent attorney

Provencher and Flatt LLP

Santa Rosa, CA · 95404

707-284-2380

Derek Jason Reynolds

Reg. 60104

Patent attorney

Intel Corporation

Folsom, CA · 95630

916-356-5374

Obie D Reynolds· IV

Reg. 79157

Patent attorney

Wilson Sonsini Goodrich & Rosati

Palo Alto, CA · 94304

650-849-3242

Thomas Charles Reynolds

Reg. 32488

Patent attorney

Schwegman Lundberg & Woessner

San Jose, CA · 95113

408-278-4058

Iman Rezanezhad Gatabi

Reg. 78835

Patent attorney

Gatabi Law Firm

San Jose, CA · 95101

979-739-0571

Seena S. Rezvani

Reg. 62974

Patent attorney

Redbrick IP, P.C.

Los Gatos, CA · 95030

415-286-5631

Michael J. Rhee

Reg. 58842

Patent attorney

Bio-Rad Laboratories, Inc.

Hercules, CA · 94547

510-741-6475

Alex J Y Rhim

Reg. 76146

Patent agent

Paul Hastings LLP

Palo Alto, CA · 94304

650-320-1869

Byunghwi Rho

Reg. 68782

Patent agent

Wilson Sonsini Goodrich & Rosati

Palo Alto, CA · 94304

203-564-3511

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.