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 Lowenstein Sandler LLP, Chevron Oronite Company, LLC, and Nicholson, De Vos, Webster & Elliot, LLP.

Top cities in California

All practitioners in California

John T Miller· Jr.

Reg. 77162

Patent attorney

Lowenstein Sandler LLP

Palo Alto, CA · 94301

650-433-5614

John R Miller

Reg. 70969

Patent agent

Chevron Oronite Company, LLC

San Ramon, CA · 94583-2324

510-242-1588

Jonathan S Miller

Reg. 48534

Patent attorney

Nicholson, De Vos, Webster & Elliot, LLP

Palo Alto, CA · 94301-1054

408-675-0441

Julia A Miller

Reg. 48086

Patent attorney

Paul Hastings Janofsky & Walker LLP

San Diego, CA · 92191-9092

858-720-2500

Kevin W Miller

Reg. 77348

Patent attorney

KIlpatrick Townsend and Stockton

Menlo Park, CA · 94025

513-604-3848

Kimberly J. Miller

Reg. 61749

Patent attorney

Knobbe, Martens, Olson & Bear, LLP

Irvine, CA · 92614

858-707-4000

Mark Elsas Miller

Reg. 31401

Patent attorney

O'Melveny & Myers LLP

San Francisco, CA · 94111-3823

415-984-8700

Mark D Miller

Reg. 32277

Patent attorney

Sierra IP Law, P.C.

Fresno, CA · 93711

559-436-3800

Matthew K Miller

Reg. 50611

Patent attorney

Menlo Park, CA · 94025

650-529-3711

Michael S Miller

Reg. 75590

Patent attorney

Morgan, Lewis & Bockius

Palo Alto, CA · 94304

650-843-7597

Patrick B. Miller

Reg. 73531

Patent agent

Kilpatrick Townsend & Stockton

San Francisco, CA · 94111

415-273-8311

Peter D Miller

Reg. 69351

Patent agent

Run8 Patent Group, LLC

San Francisco, CA · 94104-3503

415-857-3685

Russell Ben Miller

Reg. 31122

Patent attorney

San Diego, CA · 92130-2618

858-586-7144

S. Elizabeth Miller

Reg. 52031

Patent attorney

Miller Farr & Associates

Oakland, CA · 94612

510-464-8002

Scott D Miller

Reg. 43803

Patent attorney

Life Technologies, Inc.

Carlsbad, CA · 92008

760-603-7200

Scott R Miller

Reg. 32278

Patent attorney

Sheppard, Mullin, Richter &,Hampton LLP

Los Angeles, CA · 90071

213-617-4177

Shawn P Miller

Reg. 57060

Patent attorney

Marks, Golia & Finch, LLP

San Diego, CA · 92110

619-293-7000

Susan Kim Miller

Reg. 55329

Patent attorney

Los Angeles, CA · 90004

310-990-1019

Terry Lee Miller

Reg. 29568

Patent attorney

Law Office Of Terry L Miller

Mission Viejo, CA · 92692

949-951-8456

Tiffany C. Miller

Reg. 52032

Patent attorney

DLA Piper US, LLP

San Diego, CA · 92101

619-699-6445

Todd Richard Miller

Reg. 40092

Patent attorney

Vested Law LLP

Pasadena, CA · 91101

626-795-0500

Todd G Miller

Reg. 42003

Patent attorney

Fish & Richardson P.C.

San Diego, CA · 92130

858-678-5070

Warren E Miller

Reg. 25820

Patent attorney

San Francisco, CA · 94118

415-290-3860

David Thomas Millers

Reg. 37396

Patent attorney

Patent Law Offices Of David Millers

Placerville, CA · 95667

530-621-4545

Douglas R Millett

Reg. 31784

Patent attorney

Law Office of Douglas Millett

San Jose, CA · 95120

408-268-9630

Thomas N Millikan

Reg. 72316

Patent attorney

Solana Beach, CA · 92075

858-449-8162

Darren J Milliken

Reg. 42004

Patent attorney

ForeScout Technologies, Inc.

Campbell, CA · 95008

408-393-5160

Stuart J Millman

Reg. 33095

Patent agent

Millman and Associates

Palo Alto, CA · 94306

650-325-9491

Joseph R Milner

Reg. 42896

Patent attorney

Joseph R. Milner

Livermore, CA · 94550

925-323-9711

Harold J Milstein

Reg. 31545

Patent attorney

Sheppard Mullin Richter & Hampton LLP

Palo Alto, CA · 94301

650-815-2617

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.