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 Schwegman, Lundberg & Woessner, P.A., OneNav, Inc., and Carr & Ferrell LLP.

Top cities in California

All practitioners in California

Robert E Scheid

Reg. 42126

Patent attorney

Schwegman, Lundberg & Woessner, P.A.

San Jose, CA · 95113

408-278-4053

Franklin M Schellenberg

Reg. 47315

Patent agent

Palo Alto, CA · 94306

650-856-3975

James C Scheller· Jr

Reg. 31195

Patent attorney

OneNav, Inc.

Sunnyvale, CA · 94089

650-691-9447

Donald L Schelling

Reg. 53558

Patent attorney

Lower Lake, CA · 95457

Myrna M Schelling

Reg. 54426

Patent attorney

Carr & Ferrell LLP

San Mateo, CA · 94402

650-812-3400

David C Scherer

Reg. 56993

Patent agent

Pacific Biosciences of California, Inc.

Menlo Park, CA · 94025

650-521-8127

Donald Frederick Scherer

Reg. 24539

Patent attorney

Truckee, CA · 96161

530-587-2496

Rory A. Schermerhorn

Reg. 58148

Patent attorney

NuVasive, Inc.

San Diego, CA · 92121

858-909-1845

Eric R Scheuerlein

Reg. 61234

Patent attorney

Daylight Law, P.C.

Redwood City, CA · 94063

408-702-8012

Edward C Schewe

Reg. 34246

Patent attorney

Cotman IP Law Group APLC

Pasadena, CA · 91101

626-405-1413

Ian C Schick

Reg. 63293

Patent attorney

Pillsbury Winthrop Shaw Pittman LLP

San Diego, CA · 92130-4088

619-234-5000

J Michael Schiff

Reg. 40253

Patent attorney

Kilpatrick Townsend & Stockton LLP

Menlo Park, CA · 94025

650-324-6340

Michael Charles Schiffer

Reg. 30215

Patent attorney

Beckman Coulter Inc.

Brea, CA · 92822-8000

714-961-6329

John R Schiffhauer

Reg. 32170

Patent attorney

Los Altos, CA · 94022

650-492-5783

Natalie K Schiller

Reg. 67872

Patent agent

Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.

San Diego, CA · 92130

858-314-1547

John F Schilling

Reg. 57304

Patent attorney

Los Angeles, CA · 90019

323-935-1578

Griffin R. Schindler

Reg. 74288

Patent attorney

Jafari Law Group

Irvine, CA · 92612

949-362-0100

Tina I Schindler

Reg. 56483

Patent agent

Irvine, CA · 92614

949-679-3397

John F Schipper

Reg. 26994

Patent attorney

NASA Ames Research Center

Moffett Field, CA · 94035-1000

650-604-5286

Edward Allan Schlatter

Reg. 32297

Patent attorney

Knobbe Martens Olson and Bear, LLP

Irvine, CA · 92614

949-760-0404

Alexander R Schlee

Reg. 55912

Patent attorney

Schlee Intellectual Property International, P.C.

Manhattan Beach, CA · 90266

310-545-9851

Pascal A Schlee

Reg. 79160

Patent attorney

Schlee IP International, P.C.

Manhattan Beach, CA · 90266

310-545-9851

Robert Nathan Schlesinger

Reg. 29852

Patent agent

Rancho Cucamonga, CA · 91701

909-980-9540

John William Schlicher

Reg. 28343

Patent attorney

Lafayette, CA · 94549

925-818-1484

Harold C Schloss

Reg. 37439

Patent agent

Los Angeles, CA · 90034

310-559-9638

Cora L. Schmid

Reg. 71081

Patent attorney

HelixIP, LLP

Redwood City, CA · 94065

650-434-2672

Gabriele D Schmid

Reg. 77271

Patent agent

Rimon Law

San Diego, CA · 92075

619-450-1658

Otto Schmid· Jr

Reg. 19515

Patent attorney

San Jose, CA · 95125

408-269-4171

Bradford P Schmidt

Reg. 42128

Patent attorney

Archetype-IP

Carlsbad, CA · 92009

760-815-4971

David R. Schmidt

Reg. 73126

Patent attorney

Knobbe, Martens, Olson and Bear LLP

Irvine, CA · 92614

949-721-6386

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.