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 Knobbe, Martens, Olson & Bear, LLP, AMGEN INC., and Sheppard, Mullin, Richter & Hampton, LLP.

Top cities in California

All practitioners in California

Sarah M. Korman

Reg. 60105

Patent attorney

AMGEN INC.

Thousand Oaks, CA · 91320-1799

805-447-4061

Stephen Sandor Korniczky

Reg. 34853

Patent attorney

Sheppard, Mullin, Richter & Hampton, LLP

San Diego, CA · 92130

858-720-7443

Julia Kornilova

Reg. 64069

Patent attorney

Kornilova Law Group

West Hollywood, CA · 90069

213-534-7154

Charles G Korrell

Reg. 60131

Patent attorney

Hopkins & Carley

San Jose, CA · 95113

408-286-9800

George J Korsh

Reg. 63732

Patent agent

Kilpatrick Townsend & Stockton LLP

Menlo Park, CA · 94025

650-326-2400

Aleksandr Korzh

Reg. 67665

Patent attorney

Walnut Creek, CA · 94596

858-243-5266

Alexandra K Koseva

Reg. 75724

Patent attorney

Apple Inc.

Cupertino, CA · 95014-0642

408-761-7186

Christopher Paul Kosh

Reg. 42760

Patent attorney

Rambus, Inc.

Sunnyvale, CA · 94089

408-462-8903

Kristin Behrendt Kosinski

Reg. 45599

Patent attorney

Munck Wilson Mandala LLP

Los Angeles, CA · 90025

310-663-4391

Petri K Koskelainen

Reg. 62004

Patent agent

Nokia

Sunnyvale, CA · 94086

408-530-7600

Renee Mary Kosslak

Reg. 47717

Patent attorney

AbbVie Biotherapeutics, Corp.

Redwood City, CA · 94063

650-454-2338

Parvathi Kota

Reg. 65122

Patent attorney

SRI International

Menlo Park, CA · 94025

650-859-2000

Dominic M Kotab

Reg. 42762

Patent attorney

Zilka-Kotab, P.C.

San Jose, CA · 95112

408-971-2573

Shabneez R Kotadia

Reg. 53153

Patent attorney

BiTMICRO Networks, Inc.

Fremont, CA · 94538

510-743-3190

Amichai Kotev

Reg. 57668

Patent agent

Canon USA, Inc.

Irvine, CA · 92612

949-932-3313

Sujit B Kotwal

Reg. 43336

Patent attorney

KILPATRICK TOWNSEND & STOCKTON LLP

Menlo Park, CA · 94025

650-324-6365

Edmund J Koundakjian

Reg. 65576

Patent attorney

WILSON SONSINI GOODRICH & ROSATI, P.C.

San Diego, CA · 92130-3002

858-350-2250

Dennis Edward Kovach

Reg. 30189

Patent attorney

Dennis Kovach

Pleasanton, CA · 94588-4768

925-361-8728

Robert J Kovach

Reg. 51896

Patent agent

Mountain View, CA · 94040

650-965-4272

Paul Hilary Kovelman

Reg. 35228

Patent attorney

Simi Valley, CA · 93063

818-359-0715

Karolyn E Kovtun

Reg. 41912

Patent attorney

Law Office of Karolyn E. Kovtun

San Diego, CA · 92101

619-234-0600

Debolina Kowshik

Reg. 74638

Patent attorney

UCLA Technology Development Group

Los Angeles, CA · 90024

310-983-3198

Lukasz P. Koziol

Reg. 80087

Patent agent

Knobbe, Martens, Olson & Bear, LLP

Irvine, CA · 92614

212-849-3049

John M. Kozlowski

Reg. 82124

Patent agent

Cooley LLP

San Diego, CA · 92121-1117

858-550-6056

Gabriel Patrick Kralik

Reg. 34855

Patent attorney

Gawfco Enterprises, Inc.

Lafayette, CA · 94549

925-979-0560

Noreen A Krall

Reg. 39734

Patent attorney

Apple, Inc.

Cupertino, CA · 95014

408-862-5159

Brian M Kramer

Reg. 48994

Patent attorney

Morrison & Foerster LLP

San Diego, CA · 92130

858-720-5100

Dylan K. Kramer

Reg. 81154

Patent agent

Knobbe, Martens, Olson & Bear, LLP

Irvine, CA · 92614

949-721-7679

Karen J Kramer

Reg. 33935

Patent attorney

Redwood City, CA · 94063

650-362-3560

Michael S. Kramer

Reg. 58670

Patent attorney

Qualcomm Incorporated

San Diego, CA · 92121

858-845-8283

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.