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 Nixon Peabody LLP, 10x Genomics, and Acts Law Offices,.

Top cities in California

All practitioners in California

Sung Hee Kim

Reg. 81021

Patent agent

Palos Verdes Estates, CA · 90274

310-504-4787

Tae Soo S Kim

Reg. 69720

Patent attorney

Nixon Peabody LLP

Los Angeles, CA · 90071

213-629-6000

Unyoung Kim

Reg. 54222

Patent agent

Mountain View, CA · 94043

650-965-7209

William W Kim

Reg. 53127

Patent attorney

10x Genomics

Pleasanton, CA · 94588-3260

650-291-4522

Yoosung Kim

Reg. 80149

Patent agent

Cupertino, CA · 95014

626-360-8427

Young H Kim

Reg. 78982

Patent agent

Acts Law Offices,

Encino, CA · 91436

310-570-7595

Yudong Kim

Reg. 66252

Patent attorney

Texas Instruments

Santa Clara, CA · 95051

669-721-7519

Yungjee Kim

Reg. 84321

Patent attorney

Freshfields US LLP

Redwood City, CA · 94063

650-618-9250

Shinae Kim Helms

Reg. 57552

Patent attorney

Foster City, CA · 94404

650-416-4943

Daniel Rene Kimbell

Reg. 34849

Patent attorney

Karish & Bjorgum, PC

Pasadena, CA · 91101

213-785-8070

Karmin L Kime

Reg. 67140

Patent attorney

Monterey, CA · 93940

831-264-8533

Sharon Barclay Kime

Reg. 53130

Patent attorney

Sausalito, CA · 94965

415-789-9006

Wellesley Rolland Kime

Reg. 29658

Patent attorney

Wellesley R Kime

Valley Village, CA · 91607

323-650-0635

Benjamin A Kimes

Reg. 50870

Patent attorney

Lowenstein Sandler LLP

Palo Alto, CA · 94301

650-433-5800

Andrew I. Kimmel

Reg. 58855

Patent attorney

Knobbe Martens Olson & Bear LLP

Irvine, CA · 92614

949-760-0404

Robert Scott Kimsey

Reg. 50195

Patent attorney

Klein, DeNatale, Goldner

Bakersfield, CA · 93309

661-328-5340

Jorge A Kina

Reg. 74241

Patent attorney

Wilmer Cutler Pickering Hale and Dorr LLP

Palo Alto, CA · 94306

650-600-5032

Keith A Kind

Reg. 42735

Patent attorney

Mindspeed Technologies, Inc.

Newport Beach, CA · 92660

949-579-3291

Malashaan Kind

Reg. 70670

Patent attorney

Fenwick & West

Mountain View, CA · 94041

650-335-7686

Darrell D Kinder· Jr.

Reg. 57460

Patent attorney

Apple Inc.

Cupertino, CA · 95014

408-974-6473

Anthony S. King

Reg. 49063

Patent attorney

WPAT, P.C., Intellectual Property Attorneys

Newport Beach, CA · 92660

949-387-2885

Christopher Penoyer King

Reg. 60985

Patent attorney

Los Altos, CA · 94024

408-472-6636

Eric T King

Reg. 44188

Patent attorney

Canon Inc

Irvine, CA · 92612-2411

310-562-7081

Grace E. King

Reg. 72013

Patent attorney

Deloitte

Los Angeles, CA · 90013

213-688-0800

Jeffrey S King

Reg. 58791

Patent agent

Gilman, Clark & Hunter LLC

San Diego, CA · 92130

858-480-5530

John R King

Reg. 34362

Patent attorney

Knobbe Martens Olson and Bear

Irvine, CA · 92614

949-760-0404

Laura M King

Reg. 54461

Patent attorney

Matrix Law Group, LLP

Carlsbad, CA · 92008

858-810-8869

Michael S King

Reg. 51885

Patent attorney

Solar Turbines Incorporated

San Diego, CA · 92123

858-694-6793

Patrick Thomas King

Reg. 28231

Patent attorney

Law Office of Patrick T. King

Walnut Creek, CA · 94595

831-840-5240

Robert Neil King

Reg. 36388

Patent attorney

Los Altos, CA · 94024

650-965-2237

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.