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 Google Inc., Squire Patton Boggs, and Prolacta Bioscience.

Top cities in California

All practitioners in California

Leland I. Gardner

Reg. 59512

Patent attorney

Google Inc.

Mountain View, CA · 94043

650-253-4750

Scott R. Gardner

Reg. 76548

Patent attorney

Squire Patton Boggs

Palo Alto, CA · 94304

757-581-2772

Michael G. Garelick

Reg. 72902

Patent agent

Prolacta Bioscience

Duarte, CA · 91010

626-599-9260

Jonathan M Garfinkel

Reg. 62519

Patent attorney

Convergence Intellectual Property Law

Los Altos, CA · 94024

650-383-7247

Aashish K Garg

Reg. 64479

Patent attorney

San Diego, CA · 92108

619-384-3590

Ankur Garg

Reg. 62463

Patent attorney

Dinsmore & Shohl LLP

San Diego, CA · 92101

619-400-0463

Terrence D Garnett

Reg. 44698

Patent attorney

Paul, Hastings, Janofsky & Walker LLP

Los Angeles, CA · 90071-2228

213-683-6000

Matthew R. Garnica

Reg. 80412

Patent attorney

Wilson Sonsini Goodrich & Rosati

San Diego, CA · 92130

858-350-2300

Lisa A Garono

Reg. 33177

Patent attorney

Haynes and Boone, LLP

San Jose, CA · 95110

408-660-4120

Michael S Garrabrants

Reg. 51230

Patent agent

Lattice Semiconductor Corporation

San Jose, CA · 95131

408-332-7341

Mark B Garred

Reg. 34823

Patent attorney

Stetina Garred Brucker and Newboles

Aliso Viejo, CA · 92656

949-855-1246

Eugenia Garrett-Wackowski

Reg. 37330

Patent attorney

KILPATRICK TOWNSEND & STOCKTON LLP

Walnut Creek, CA · 94596

925-472-5000

Mark E Garscia

Reg. 31953

Patent attorney

Lewis Roca Rothgerber Christie LLP

Glendale, CA · 91209-9001

626-795-9900

Scott R Garvey

Reg. 70548

Patent agent

Napa, CA · 94559

707-815-0357

Samuel K. Garza

Reg. 84341

Patent agent

Morgan, Lewis, and Bockius LLP

San Francisco, CA · 94105

415-442-1383

Jemuel S Gascon

Reg. 79766

Patent attorney

Fresno, CA · 93730

559-779-6643

John L Gase

Reg. 47590

Patent attorney

Leydig Voit and Mayer LTD

Walnut Creek, CA · 94596

Andrea L Gashler

Reg. 41029

Patent agent

McDermott Will and Emery

San Diego, CA · 92122

858-535-9001

Matthew S Gast

Reg. 50350

Patent agent

Skydio

San Mateo, CA · 94402

415-334-0705

George Henry Gates· III

Reg. 33500

Patent attorney

Gates & Cooper LLP

Hermosa Beach, CA · 90254

310-641-8797

Ryan J. Gatzemeyer

Reg. 71728

Patent attorney

Morrison & Foerster

San Francisco, CA · 94105

415-268-6310

Chelsea J Gaudet

Reg. 82296

Patent agent

LaJolla, CA · 92037

504-669-4015

Timothy J Gaul

Reg. 33111

Patent attorney

Amgen Inc.

Thousand Oaks, CA · 91320

805-447-2688

Harold S Gault

Reg. 29152

Patent attorney

Claremont, CA · 91711

909-626-5500

John Frederick Gaustad

Reg. 69522

Patent attorney

Morgan, Lewis & Bockius LLP

San Francisco, CA · 94105-1596

415-442-1427

James A Gavney· Jr

Reg. 45687

Patent agent

Jag Patent Services LLC

San Mateo, CA · 94401

650-814-8398

Anna L Gavrilova

Reg. 58181

Patent agent

Weaver Austin Villeneuve & Sampson LLP

Oakland, CA · 94612-0250

510-663-1100

Charles D Gavrilovich· Jr

Reg. 41031

Patent attorney

Gavrilovich, Dodd & Lindsey, LLP

Chula Vista, CA · 91910

619-271-0382

David A Gay

Reg. 39200

Patent attorney

Greenberg Traurig, LLP

Los Angeles, CA · 90067-2121

858-314-1182

Angelo J Gaz

Reg. 45907

Patent attorney

SoCal IP Law Group LLP

Westlake Village, CA · 91362

805-230-1350

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.