Washington

Patent attorneys in Washington

Washington hosts 1,446 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 Law Office of Jan Little-Washington, Seattle Genetics, and Seed IP Law Group LLP.

Top cities in Washington

All practitioners in Washington

Jan Carol Little-Washington

Reg. 41181

Patent attorney

Law Office of Jan Little-Washington

Seattle, WA · 98118

206-489-7517

George D Liu

Reg. 47752

Patent attorney

Redmond, WA · 98053

425-836-1593

Jean I Liu

Reg. 38682

Patent attorney

Seattle Genetics

Bothell, WA · 98021

425-527-4882

Shi Liu

Reg. 67099

Patent attorney

Seed IP Law Group LLP

Seattle, WA · 98104

206-622-4900

Dennis P Lo

Reg. 72528

Patent agent

Vancouver, WA · 98663

360-356-4546

Karen Lo

Reg. 61352

Patent agent

Seattle, WA · 98112

206-354-1960

Jordan M. Lofdahl

Reg. 59163

Patent attorney

Vaughn, WA · 98394

303-667-3759

Gregory J. Logan

Reg. 79055

Patent attorney

Perkins Coie

Seattle, WA · 98101-3099

737-256-6102

Joel R Lohrmeyer

Reg. 65384

Patent attorney

LEE & HAYES, PLLC

Spokane, WA · 99201

509-324-9256

Christina A. Lomasney

Reg. 79608

Patent agent

L Works LLC

Seattle, WA · 98103

320-433-6173

Suzanne E Long

Reg. 39753

Patent attorney

Seattle, WA · 98112

206-720-0690

Thomas E Loop

Reg. 42810

Patent attorney

Loop Intellectual Property Law, PLLC

Seattle, WA · 98111

206-568-3100

Janell J C Lopez

Reg. 82619

Patent agent

FIG. 1 Patents, PLLC

Spokane, WA · 99201-3669

509-321-3430

Mark Lawrence Lorbiecki

Reg. 45643

Patent attorney

Williams Kastner & Gibbs PLLC

Seattle, WA · 98101

206-628-6605

David A Lowe

Reg. 39281

Patent attorney

Lowe Graham Jones

Seattle, WA · 98104

206-381-3303

Quincy A Lu

Reg. 76954

Patent attorney

Quinn Emanuel Urquhart & Sullivan, LLP

Seattle, WA · 98101

206-905-7000

Chiu Hung Luk

Reg. 73991

Patent agent

Lee & Hayes, PLLC

Spokane, WA · 99201

509-944-4774

Joan H Lukasik

Reg. 47762

Patent attorney

Bainbridge Island, WA · 98110

206-780-8868

Hong Lundvall

Reg. 82564

Patent agent

Seattle, WA · 98115

206-785-5251

John M. Lunsford

Reg. 67185

Patent attorney

F5 Networks

Seattle, WA · 98104

206-272-1213

Kevin L.F. Luo

Reg. 37004

Patent attorney

Microsoft Corporation

Redmond, WA · 98052

425-882-8080

Zhengyun Luo

Reg. 73499

Patent agent

Westbridge IP LLC

Bothell, WA · 98021

425-659-3366

Lawrence E Lycke

Reg. 38540

Patent attorney

Kestra Medical Technologies, Inc.

Kirkland, WA · 98033

425-528-1751

J Christopher Lynch

Reg. 34216

Patent attorney

Spokane, WA · 99201

509-951-3289

John Francis Lynch

Reg. 22504

Patent attorney

Port Ludlow, WA · 98365

360-437-7605

Eric H Ma

Reg. 61475

Patent attorney

Shuttle Legal Services PLLC

Sammamish, WA · 98075

425-633-9303

Hong Ma

Reg. 75532

Patent agent

Bothell, WA · 98021

206-295-5768

Jian Ma

Reg. 48820

Patent agent

Intellectual Ventures

Bellevue, WA · 98005

425-449-3744

Anzhela S Mabry

Reg. 81087

Patent attorney

Spokane, WA · 99201

509-324-9256

Champagne X Mac

Reg. 73529

Patent attorney

Lee & Hayes, PC

Seattle, WA · 98101

206-876-6038

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?

1,446 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.