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 DLA Piper, Knobbe Martens Olson & Bear, LLP, and LendingClub.

Top cities in California

All practitioners in California

Julie Y. Lum

Reg. 80323

Patent agent

DLA Piper

San Francisco, CA · 94105

650-833-2061

Nathanael R Luman

Reg. 63160

Patent attorney

Knobbe Martens Olson & Bear, LLP

San Diego, CA · 92130

858-836-9000

Shane T. Lunceford

Reg. 64452

Patent attorney

LendingClub

San Francisco, CA · 94105

415-271-9242

Skyler R. Lund

Reg. 72976

Patent agent

Rivian

Irvine, CA · 92612

714-794-8174

Gregory J Lundell

Reg. 54582

Patent agent

Haley Guiliano LLP

San Jose, CA · 95113

669-213-1065

David K Lundgren

Reg. 76636

Patent agent

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

San Diego, CA · 92130

858-314-1500

David C Lundmark

Reg. 42815

Patent attorney

Vista IP Law Group, LLP

Saratoga, CA · 95070

408-777-2906

Sean A. Luner

Reg. 36588

Patent agent

Dovel & Luner, LLP

Santa Monica, CA · 90401

310-656-7066

Jessica L. Lunney

Reg. 62125

Patent attorney

Associate Patent Counsel

Mountain View, CA · 94043

650-458-7644

Cong Luo

Reg. 68120

Patent agent

GRAIL

Menlo Park, CA · 94025

650-542-0372

Diana X Luo

Reg. 56818

Patent attorney

WALMART GLOBAL ECOMMERCE

San Bruno, CA · 94066

Lihong Luo

Reg. 63068

Patent agent

Fremont, CA · 94539

203-980-3176

Yabing Luo

Reg. 73439

Patent agent

Foley & Larner LLP

Redwood City, CA · 94301

650-251-1122

Mark Lupkowski

Reg. 49010

Patent attorney

Squire, Sanders & Dempsey (US) LLP

San Francisco, CA · 94111-3356

415-954-0297

Maxwell V Lurie

Reg. 84005

Patent agent

Alamo, CA · 94507

805-558-3847

Laurent P. Lusinchi

Reg. 75059

Patent agent

Ladas & Parry LLP

Los Angeles, CA · 90036

323-988-4455

Shubha Luthra

Reg. L1244

Limited recognition

San Ramon, CA · 94583

612-605-7773

Richard J Lutton· Jr

Reg. 39756

Patent attorney

Nestlabs, Inc.

Palo Alto, CA · 94304

650-823-0698

Joseph Lutz

Reg. 43765

Patent attorney

Seyfarth Shaw LLP

Los Angeles, CA · 90067-3021

310-201-1545

Truc M Luu

Reg. 54287

Patent attorney

Ropers Majeski Kohn Bentley

Los Angeles, CA · 90071

213-312-2002

Matthew S Luxton

Reg. 41960

Patent attorney

General Dynamics NASSCO

San Diego, CA · 92186

619--54-4-8700

Robert Luzzi

Reg. 70076

Patent agent

Pleasanton, CA · 94588

603-502-3924

Jacqueline R Lyandres

Reg. 68165

Patent attorney

Wilson Sonsini Goodrich & Rosati

Palo Alto, CA · 94304

650-493-9300

Ron M Lycan

Reg. 50779

Patent agent

Procopio Cory Hargreaves and Savitch LLP

San Diego, CA · 92101

619-238-1900

Nicholas D. Lyford

Reg. 70686

Patent agent

Velo3d, Inc.

Campbell, CA · 95008

408-610-3915

Christopher L. Lyle

Reg. 71859

Patent attorney

Canon U.S.A., Inc.

Irvine, CA · 92612

949-932-3109

Christopher D Lynch

Reg. 68915

Patent agent

Orrick, Herrington & Sutcliffe LLP

Los Angeles, CA · 90071

213-612-2318

Cindy A Lynch

Reg. 38699

Patent attorney

Cindy A. Lynch

Belmont, CA · 94002

650-703-1490

Connor Thomas Lynch

Reg. 77393

Patent agent

Lynch, LLP

Los Angeles, CA · 90026

949-229-3141

Jamison E Lynch

Reg. 41168

Patent agent

Gilead Sciences, Inc.

Foster City, CA · 94404

650-372-4402

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.