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 Wilson Sonsini Goodrich & Rosati, The Law Office of Griffin Lee, APC, and Kramer Levin Naftalis & Frankel LLP.

Top cities in California

All practitioners in California

Gloria S Lee

Reg. 74997

Patent agent

Wilson Sonsini Goodrich & Rosati

Palo Alto, CA · 94304

650-238-7291

Griffin S. Lee

Reg. 67481

Patent attorney

The Law Office of Griffin Lee, APC

La Crescenta, CA · 91214

424-353-2226

Hakno Lee

Reg. 76278

Patent agent

Yorba Linda, CA · 92886

657-242-6824

Hannah Y Lee

Reg. 64001

Patent attorney

Kramer Levin Naftalis & Frankel LLP

Menlo Park, CA · 94025

650-752-1714

Harry Sung Lee

Reg. 56814

Patent agent

Nixon Peabody LLP

Los Angeles, CA · 90071-3151

213-629-6129

Heather A Lee

Reg. 54673

Patent attorney

Sherman Oaks, CA · 91403

310-906-6880

Hoshin Lee

Reg. 64168

Patent attorney

Los Altos, CA · 94024

650-968-1595

Hwa C. Lee

Reg. 59747

Patent attorney

AppDynamics, Inc.

San Francisco, CA · 94107

415-580-4118

Hye In Lee

Reg. 80322

Patent agent

Samsung Research America

Mountain View, CA · 94043

650-210-1001

Hyeok Jae Lee

Reg. 800135

Limited recognition

Polsinelli LLP

San Francisco, CA · 94111

415-248-2174

Hyoung Gook Lee

Reg. 79379

Patent agent

K&L Gates LLP

Irvine, CA · 92614

949-623-3617

Irene Y Lee

Reg. 54259

Patent attorney

Russ August & Kabat

Los Angeles, CA · 90025

310-979-8224

Jae Jin Lee

Reg. 800099

Limited recognition

Knobbe, Martens, Olson & Bear, LLP

Irvine, CA · 92614

949-721-5281

JaeWon Lee

Reg. 80689

Patent attorney

Lam Research Corporation

Fremont, CA · 94538-6401

213-793-3325

James J Lee

Reg. 75465

Patent attorney

Los Angeles, CA · 90010

310-210-3258

Jason J. Lee

Reg. 62424

Patent attorney

Google LLC

Mountain View, CA · 94043

213-814-4713

Jeehaeng Lee

Reg. 84322

Patent agent

Lowenstein Sandler LLP

Palo Alto, CA · 94301

650-433-5800

Jefferson K. Lee

Reg. 83532

Patent agent

Irvine, CA · 92618

949-272-6407

Jen-Feng Lee

Reg. 46864

Patent attorney

City Of Industry, CA · 91748

626-810-7200

Jennifer J Lee

Reg. 68245

Patent attorney

Tropical Lab Productions LLC

Santa Clarita, CA · 91380

424-272-7134

Jenny Lee

Reg. 46865

Patent attorney

Westin Automotive Products, Inc.

San Dimas, CA · 91773

949-716-7568

Jieh-Sheng Lee

Reg. 83675

Patent attorney

San Jose, CA · 95126

408-609-3757

John A Lee

Reg. 53194

Patent attorney

McDermott Will & Emery LLP

Palo Alto, CA · 94304-1212

650-813-5098

John H Lee

Reg. 53193

Patent attorney

Lawrence Livermore National Security

Livermore, CA · 94551

925-422-7073

Joseph K. Lee

Reg. 71143

Patent attorney

Irvine, CA · 92603

949-648-9772

Joseph H Lee

Reg. 37664

Patent attorney

Hewlett Packard Enterprise

Palo Alto, CA · 94304

650-236-7163

Joshua M Lee

Reg. 71650

Patent attorney

Ionis Pharmaceuticals, Inc.

Carlsbad, CA · 92010

760-286-8674

Justin D Lee

Reg. 68164

Patent attorney

Lee, Hong, Degerman, Kang & Waimey PC

Los Angeles, CA · 90017

213-623-2221

Kawon Lee

Reg. 68246

Patent attorney

Palo Alto, CA · 94301-1479

650-815-2600

Letitia C Lee

Reg. 73967

Patent agent

Foster City, CA · 94404

650-867-2178

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.