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 Lee & Hayes, PLLC, Lee & Hayes, P.C., and lmmunome, Inc..

Top cities in Washington

All practitioners in Washington

Haining Shu

Reg. 73316

Patent agent

Lee & Hayes, P.C.

Spokane, WA · 99201

509-324-9256

Cynthia L Shumate

Reg. 38303

Patent attorney

lmmunome, Inc.

Bothell, WA · 98011

206-817-8124

Timothy E Siegel

Reg. 37442

Patent attorney

Timothy E Siegal Patent Law, PLLC

Bellevue, WA · 98004

425-283-1166

Randy O Sigle

Reg. 47944

Patent agent

Fred Hutchinson Cancer Research Ctr

Seattle, WA · 98125

206-525-9561

Joseph K Siino

Reg. 37533

Patent attorney

Siino Ventures, LLC

Kirkland, WA · 98033

425-307-1555

Anni Johanna Siitonen

Reg. 74974

Patent attorney

Perkins Coie LLP

Seattle, WA · 98101

120-635-93594

George P Simion

Reg. 47089

Patent attorney

TerraPower, LLC

Bellevue, WA · 98033

650-450-0551

Philip C. Simon

Reg. 83948

Patent attorney

Dorsey & Whitney

Seattle, WA · 98104

206-903-2434

Kathryn Elizabeth Simpson

Reg. 902407

Limited recognition

Gonzaga University School of Law

Spokane, WA · 99202

509-313-5791

Phillip A Singer

Reg. 40176

Patent attorney

Seattle, WA · 98115

Vincent A Singh

Reg. 55623

Patent attorney

Nintendo of America Inc.

Redmond, WA · 98052

425-497-7792

Priya Sinha

Reg. 59637

Patent attorney

Geek Chick LLC

Seattle, WA · 98103

425-231-4749

Janet Sleath

Reg. 37007

Patent agent

Seattle, WA · 98119

Shaun N Sluman

Reg. 63295

Patent attorney

Lee & Hayes, PLLC

Seattle, WA · 98101

206-876-6024

Matthew J Small

Reg. 55882

Patent attorney

Northwest Tech Law PLLC

Seattle, WA · 98103

206-729-3575

Briana M Smith

Reg. 83000

Patent agent

Lee & Hayes PC

Seattle, WA · 98101

206-876-6032

Christopher S. Smith

Reg. 82813

Patent attorney

Ocean Shores, WA · 98569

575-418-9200

Jamey C Smith

Reg. 71669

Patent agent

Inventure Renewables, Inc.

Seattle, WA · 98103

267-760-3048

Julie K Smith

Reg. 38619

Patent attorney

Bainbridge Island, WA · 98110

206-842-7116

Leonard Smith· Jr

Reg. 45118

Patent attorney

Microsoft Corporation

Redmond, WA · 98052

425-706-7554

Michael J Smith

Reg. 56702

Patent agent

AMPACC Law Group

Lynnwood, WA · 98037

425-348-3500

Scott E Smith

Reg. 61721

Patent attorney

Seattle, WA · 98105

206-616-3272

Theodore Root Smith· JR

Reg. 74389

Patent attorney

Theodore Root Smith

Seattle, WA · 98107

206-398-9078

Wayne W. Smith

Reg. 61172

Patent attorney

Kent, WA · 98030

253-332-2868

Jay R. Smith-Hill

Reg. 56251

Patent attorney

Port Angeles, WA · 98363

503-975-6577

Jeremy S. Snodgrass

Reg. 64991

Patent attorney

Oculus VR LLC

Redmond, WA · 98052

734-276-4190

Bryan B Solstin

Reg. 75593

Patent agent

Mill Creek, WA · 98012

206-778-1107

Bobby B Soltani

Reg. 54459

Patent attorney

Seed Intellectual Property Law Group LLP

Seattle, WA · 98104

206-622-4900

Nancy Somers

Reg. 66754

Patent agent

Spokane, WA · 99203

509-904-9998

Nicholas A Somers

Reg. 73910

Patent attorney

Lee & Hayes, PLLC

Spokane, WA · 99201

509-324-9256

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.