Washington

Patent attorneys in Washington

Washington hosts 1,434 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 Washington. 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 Davis Wright Tremaine LLP, Intellectual Ventures, and Lee & Hayes.

Top cities in Washington

All practitioners in Washington

Yanek A. Kondryszyn

Reg. 70260

Patent attorney

Lee & Hayes

Spokane, WA · 99201

509-324-9256

Alexander W Kong

Reg. 77150

Patent agent

Mill Creek, WA · 98012

206-303-0333

Andrew Gus Konstantaras

Reg. 35227

Patent attorney

Intellectual Ventures

Bellevue, WA · 98005

425-495-8680

Takahiro Koshibu

Reg. 78889

Patent agent

BELLEVUE, WA · 98004

650-644-8984

Richard Arthur Koske

Reg. 33527

Patent attorney

Foster Garvey PC

Seattle, WA · 98101

206-447-6253

Stephen S. Kotter

Reg. 84025

Patent agent

Seattle, WA · 98104

206-757-8762

Brian D Krell

Reg. 51899

Patent attorney

Issaquah, WA · 98029

425-894-0334

Erika A. Kretzmer

Reg. 78867

Patent agent

Seattle, WA · 98117

503-473-0992

Pramitha Krishnamurthyprakash

Reg. 800089

Limited recognition

Mercedes-Benz Research & Development North America

Seattle, WA · 98101

206-693-7200

Aditya Krishnan

Reg. 41531

Patent attorney

Lee & Hayes PC

Spokane, WA · 85004

509-944-4732

Damon J. Kruger

Reg. 60400

Patent attorney

Vertical World, Inc

Lynnwood, WA · 98036

206-369-4550

Mirielle J. Kruger

Reg. 80075

Patent agent

FIG. 1 Patents. PLLC

Spokane, WA · 99201

509-755-7249

Blake Kenji Kumabe

Reg. 68240

Patent attorney

Seed IP Law Group LLP

Seattle, WA · 98104

206-622-4900

Vijay S. Kumar

Reg. 77612

Patent attorney

Perkins Coie LLP

Seattle, WA · 98101

425-308-8050

Christopher L Kuyper

Reg. 59611

Patent attorney

Davis Wright Tremaine LLP

Seattle, WA · 98104

206-757-8587

Amy Oi Yan Kwan

Reg. 59829

Patent attorney

Clyde Hill, WA · 98004

425-894-2287

Gina P Kwan

Reg. 41921

Patent attorney

Bellevue, WA · 98009

650-387-8475

Michael O. Kwon

Reg. 82224

Patent attorney

RMK LLC

Lakewood, WA · 98496-0797

206-395-8322

Amir Kyarad

Reg. 79500

Patent agent

Davis Wright Tremaine LLP

Seattle, WA · 98104-1610

321-203-9386

Carol Denise Laherty

Reg. 51909

Patent attorney

Cooley LLP

Seattle, WA · 98101-1355

206-452-8700

James E Lake

Reg. 44854

Patent attorney

Randall Danskin, P.S.

Spokane, WA · 99201-0626

509-747-2052

Bonnie Lam

Reg. 84429

Patent agent

Seattle, WA · 98101

120-631-77225

Yen B Lam

Reg. 53178

Patent attorney

Seattle, WA · 98103

206-784-5900

Sonya L Langsdorf

Reg. 60819

Patent attorney

Clark County District Court

Vancouver, WA · 98666-8806

360-397-6044

James C Larsen

Reg. 58565

Patent attorney

Larsen IP, PLLC

Bothell, WA · 98021

425-298-6846

Robert K. Lau

Reg. 45441

Patent agent

Robert K. Lau, Esquire

Bellingham, WA · 98229

360-283-5265

Andrew L. Laughlin

Reg. 70991

Patent attorney

Christensen O'Connor Johnson Kindness PLLC

Seattle, WA · 98101

206-682-8100

Andrew M Launder

Reg. 78845

Patent agent

Davis Wright Tremaine LLP

Seattle, WA · 98104

503-778-5241

Robert C Laurenson

Reg. 34206

Patent attorney

Intellectual Ventures

Bellevue, WA · 98005

425-495-8691

Steven D Lawrenz

Reg. 37376

Patent attorney

Seed IP Law Group

Seattle, WA · 98104

206-622-4900

Common questions

Do I need a patent attorney based in Washington?

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 Washington-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 Washington?

1,434 active USPTO-registered patent practitioners list a Washington 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.