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 Lowry Blixseth APC, Loza & Loza, LLP, and Lewis Roca Rothgerber, LLP.

Top cities in California

All practitioners in California

Clara C. Low

Reg. 73809

Patent attorney

Lewis Roca Rothgerber, LLP

Menlo Park, CA · 94025

650-687-8421

Scott M. Lowry

Reg. 58832

Patent attorney

Lowry Blixseth APC

Agoura Hills, CA · 91301

818-584-6460

Stuart Orin Lowry

Reg. 26563

Patent attorney

Lowry Blixseth APC

Agoura Hills, CA · 91301

818-584-6460

Karin Elizabeth Loyola

Reg. 35976

Patent attorney

Altadena, CA · 91001

626-375-6490

Christina S Loza

Reg. 56866

Patent attorney

Loza & Loza, LLP

Upland, CA · 91786

714-453-9824

Julio Loza

Reg. 47758

Patent attorney

Loza & Loza, LLP

Upland, CA · 91786

714-453-9824

Vladimir S. Lozan

Reg. 68430

Patent attorney

Knobbe Martens Olson & Bear, LLP

Irvine, CA · 92614

949-721-2828

Dina Lee Lozofsky

Reg. 56563

Patent agent

Encino, CA · 91436

626-456-8090

Bing Lu

Reg. 81277

Patent agent

San Jose, CA · 95158

408-904-9029

Bryce T Lu

Reg. 55406

Patent agent

Tustin, CA · 92980

310-650-4289

Haibo James Lu

Reg. 58518

Patent attorney

San Diego, CA · 92163

619-255-9700

Haw-Minn Lu

Reg. 55407

Patent agent

San Diego, CA · 92126

858-382-7513

Jia-geng Lu

Reg. 68342

Patent attorney

Dechert LLP

Mountain View, CA · 94040

650-813-4872

Lawrence T Lu

Reg. 60372

Patent agent

One Apple Park Way

Cupertino, CA · 95014

408-783-4880

Li Lu

Reg. 83085

Patent agent

San Diego, CA · 92129

484-632-6356

Melissa C. Lu

Reg. 82033

Patent agent

Cupertino, CA · 95014

408-300-2476

Raymond S. Lu

Reg. 83166

Patent attorney

Irvine, CA · 92602

281-704-2930

Samuel K Lu

Reg. 40707

Patent attorney

Irell & Manella, LLP

Los Angeles, CA · 90067

310-277-1010

Simon K Lu

Reg. 51974

Patent attorney

Belmont, CA · 94002

650-592-3510

Wei Y. Lu

Reg. 73770

Patent attorney

Sunnyvale, CA · 94089

510-984-4523

Ying Lu

Reg. 80468

Patent agent

Nelson Mullins Riley & Scarborough LLP

Torrance, CA · 90502

424-221-7431

Yite J Lu

Reg. 63158

Patent attorney

Orrick Herrington & Sutcliffe LLP

Los Angeles, CA · 90071

213-612-2374

Yun L Lu

Reg. 72766

Patent attorney

Foley & Lardner LLP

San Diego, CA · 92130

858-847-6759

Zhou Lu

Reg. 57248

Patent attorney

Nixon Peabody LLC

San Francisco, CA · 94111-3600

415-984-8243

Christopher R Lubeck

Reg. 62578

Patent attorney

Luminar Technologies, Inc.

Palo Alto, CA · 94304

510-282-6860

Paul Terry Lubeck

Reg. 25890

Patent attorney

Sam Rafael, CA · 94903

415-554-7701

Laurie Rose L Lubiano

Reg. 67784

Patent attorney

The Climate Corporation

San Francisco, CA · 94103

650-291-6974

Lee D Lubin

Reg. 70843

Patent attorney

Law Office of Lee David Lubin, Inc.

Encino, CA · 91436

818-728-0712

Stuart Lubitz

Reg. 20680

Patent attorney

DLA Piper

Los Angeles, CA · 90067-4704

310-595-3132

Abigail Lubow

Reg. 75839

Patent attorney

Menlo Park, CA · 94025

415-828-1669

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.