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 TKJ-LAW, Morgan, Lewis & Bockius LLP, and Anduril Industries, Inc..

Top cities in California

All practitioners in California

Teddy K Joe

Reg. 51850

Patent attorney

TKJ-LAW

San Francisco, CA · 94127

713-941-9413

Dag Hoffseide Johansen

Reg. 36172

Patent attorney

Menlo Park, CA · 94025

650-814-4589

Walter Edward Johansen· III

Reg. 26744

Patent attorney

Santa Monica, CA · 90404

310-795-7425

Athena C Johns

Reg. 64771

Patent attorney

Morgan, Lewis & Bockius LLP

Palo Alto, CA · 94304

650-843-7517

Aaron S. Johnson

Reg. 74164

Patent attorney

Anduril Industries, Inc.

Costa Mesa, CA · 92626

949-817-9483

Avery I Johnson

Reg. 79010

Patent agent

Kubota & Basol LLP

Los Angeles, CA · 90071

213-880-3643

Benjamin P Johnson

Reg. 70348

Patent attorney

ecoATM, LLC

San Diego, CA · 92121

949-838-7008

Brent A. Johnson

Reg. 51851

Patent attorney

Maschoff Brennan

Irvine, CA · 92618

949-202-1900

Bryan J. Johnson

Reg. 77244

Patent attorney

Knobbe Martens

San Francisco, CA · 94104

415-954-4114

Bryan E Johnson

Reg. 69156

Patent attorney

Paramount, CA · 90723

310-648-5015

Bryce A. Johnson

Reg. 74733

Patent attorney

Buche & Associates, P.C.

La Jolla, CA · 92037

858-459-9111

Christine Johnson

Reg. 38507

Patent attorney

Upwork

Palo Alto, CA · 94301

267-275-1245

Daniel Enoch Johnson

Reg. 37033

Patent agent

San Jose, CA · 95119

408-677-0956

Doyle B Johnson

Reg. 39240

Patent attorney

Moraga, CA · 94556

925-323-1074

Emily C. Johnson

Reg. 60269

Patent attorney

Amgen

Thousand Oaks, CA · 91320

805-477-0150

Erik P Johnson

Reg. 56382

Patent agent

Doubloon Diagnostic Consulting

Oceanside, CA · 92056

858-245-7923

J. Thomas Johnson· III

Reg. 68945

Patent attorney

Shape Security, Inc.

Mountain View, CA · 94040

408-605-4892

Jeffrey L Johnson

Reg. 53078

Patent attorney

ORRICK, HERRINGTON & SUTCLIFFE LLP

Irvine, CA · 92614

713-658-6450

Keith Lowell Johnson

Reg. 34630

Patent attorney

Chatsworth, CA · 91311

818-882-3237

Kevin P B Johnson

Reg. 38927

Patent attorney

Quinn Emanuel Urquhart & Sullivan, LLP

Redwood Shores, CA · 94065

650-801-5000

Larry Joel Johnson

Reg. 56861

Patent attorney

DocuSign

San Francisco, CA · 94105

408-772-7987

Laura J Johnson

Reg. 48208

Patent agent

Idea Rocket Consulting

Poway, CA · 92064

858-352-8913

Lee A Johnson

Reg. 75671

Patent attorney

Wilson Sonsini Goodrich & Rosati

San Diego, CA · 92130

858-344-1785

Leigh E Johnson

Reg. 51853

Patent attorney

Law Offices Of Leigh E. Johnson, A.P.C

Richmond, CA · 94806

510-245-2468

Matthew R Johnson

Reg. 77387

Patent attorney

ASML

San Diego, CA · 92127

405-706-5982

Pia M Johnson

Reg. 45509

Patent agent

Davis, CA · 95616

530-758-8935

Prentiss Wayne Johnson

Reg. 33123

Patent attorney

IBM Corporation

San Jose, CA · 95141

408-463-5673

Rosana S Johnson

Reg. 41095

Patent agent

Foothill Ranch, CA · 92610

949-830-5020

Tiffany A. Johnson

Reg. 73333

Patent attorney

Boston Scientific

Valencia, CA · 91355

817-217-9609

William L Johnson

Reg. 41876

Patent attorney

DTS, Inc.

Calabasas, CA · 91302

818-436-1336

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.