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 NAGRA Kudelski, Jones Day, and IBM Corporation.

Top cities in California

All practitioners in California

James D. Ragon

Reg. 62388

Patent attorney

NAGRA Kudelski

San Francisco, CA · 94111

650-962-2204

Nazli G Rahim

Reg. 76338

Patent attorney

Jones Day

Palo Alto, CA · 94303

650-739-3939

Kenan Rahmani

Reg. 80651

Patent attorney

Santa Ana, CA · 92706

714-547-4700

Abdolreza Raissinia

Reg. 38686

Patent attorney

IBM Corporation

San Jose, CA · 95120-6099

408-956-3130

Vikram A Rajan

Reg. 73576

Patent agent

San Francisco, CA · 94103

732-977-5618

Bimal J Rajkomar

Reg. 67070

Patent attorney

San Jose, CA · 95118

408-833-5576

James M. Raleigh

Reg. 82505

Patent attorney

Knobbe Martens

Irvine, CA · 92614

121-284-93063

Benjamin A Ram

Reg. 38588

Patent attorney

Sunnyvale, CA · 94086

408-720-0550

Rachna J Ram

Reg. 69232

Patent agent

Albany, CA · 94706

510-524-1579

Aarti Arianna Rama

Reg. 65178

Patent agent

Costa Mesa, CA · 92626

415-744-1464

Vignesh Ramachandran

Reg. 77203

Patent agent

Pleasanton, CA · 94588

925-846-7138

Roopa Ramamoorthi

Reg. 63112

Patent agent

Berkeley, CA · 94709

510-528-8494

Bala M Ramasamy

Reg. 67071

Patent attorney

San Diego, CA · 92121-1714

858-651-7188

Suma N Ramaswamy-Canzius

Reg. 47882

Patent attorney

San Ramon, CA · 94582

925-230-8888

Charles E Ramberg

Reg. 55562

Patent agent

C.E. Ramberg

Los Altos, CA · 94022

650-575-0662

Joseph Gerard V. Ramirez

Reg. 84310

Patent agent

Haley Guiliano LLP

San Jose, CA · 95113

669-213-1075

Constance F Ramos

Reg. 47883

Patent attorney

Law Office of Constance F. Ramos, PhD

Oakland, CA · 94612

510-473-8876

Robert T Ramos

Reg. 37915

Patent attorney

Thousand Oaks, CA · 91320

805-409-7157

Alexis N. Ramsey

Reg. 80462

Patent attorney

Weil, Gotshal & Manges LLP

Redwood City, CA · 94065

301-305-4492

Jessica J Ramsey

Reg. 78988

Patent attorney

Wilson Sonsini Goodrich Rosati

San Francisco, CA · 94105

415-810-6139

Rhett D. Ramsey

Reg. 78415

Patent agent

Knobbe, Martens, Olson & Bear, LLP

Irvine, CA · 92614

949-721-2932

Sunjay S Ramsinghani

Reg. 65051

Patent attorney

Anaheim, CA · 92807

714-310-3894

Kulpreet Singh Rana

Reg. 43127

Patent attorney

Google, Inc.

Mountain View, CA · 94043

650-623-4000

Theodore Allen Rand

Reg. 77446

Patent agent

Morgan, Lewis & Bockius LLP

Palo Alto, CA · 94304

650-843-7275

David A Randall

Reg. 37217

Patent attorney

Sheppard, Mullin, Richter & Hampton LLP

Los Angeles, CA · 90071

213-617-5554

Thomas R Randall

Reg. 71110

Patent agent

Figma, Inc.

San Francisco, CA · 94102

415-890-5404

Steven A Raney

Reg. 58317

Patent attorney

Qualcomm Incorporated

San Diego, CA · 92121-3561

858-845-3561

Arjun Rangarajan

Reg. 73706

Patent attorney

Gibson, Dunn & Crutcher LLP

Palo Alto, CA · 94301

650-849-5221

Monika Rani

Reg. 78243

Patent agent

Johnson&Johnson

Irvine, CA · 92618

949-450-7705

Kathleen Y Rao

Reg. 76866

Patent agent

N/A, CA · 95616

801-712-4416

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.