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 The Boeing Company, Seed Intellectual Property Law Group LLP, and Awatea.

Top cities in Washington

All practitioners in Washington

Marie B Connett-Porceddu

Reg. 55083

Patent agent

Awatea

Bellevue, WA · 98008

646-287-3119

Patrick J Connolly

Reg. 69570

Patent attorney

Bracewell & Giuliani LLP

Seattle, WA · 98104-7043

206-204-6231

Melissa J Coombes

Reg. 70096

Patent attorney

Lee & Hayes, PLLC

Spokane, WA · 99201

509-324-9256

Kenneth James Cooper

Reg. 29488

Patent attorney

The Boeing Company

Seattle, WA · 98124-2207

206-662-1316

Michael P. Cooper

Reg. 68322

Patent attorney

Seed IP Law Group LLP

Seattle, WA · 98104

206-694-4900

Rebecca K. Corcoran

Reg. 78530

Patent attorney

Funke Law Firm PLLC

Tacoma, WA · 98402

425-205-0052

Michael S. Cordray

Reg. 76208

Patent agent

Dorsey & Whitney LLP

Seattle, WA · 98104

206-903-8822

Robert N Cordy

Reg. 42438

Patent agent

Pasco, WA · 99301

208-634-6691

Steven R. Corey

Reg. 60656

Patent attorney

The Boeing Company

Seattle, WA · 98124

206-662-6508

Jennifer H Cornely

Reg. 70033

Patent attorney

Fluke Corporation

Everett, WA · 98203

813-564-5949

Gwendolyn S Cornwell

Reg. 62145

Patent agent

Phillips Law Firm

Woodinville, WA · 98072

425-482-1111

Kevin S Costanza

Reg. 37801

Patent attorney

Seed Intellectual Property Law Group LLP

Seattle, WA · 98104

206-622-4900

Melina L. Costanza

Reg. 81573

Patent agent

Seed Intellectual Property Law Group LLP

Seattle, WA · 98104

206-622-4900

Donald J Coulman

Reg. 50406

Patent attorney

Intellectual Ventures

Bellevue, WA · 98005

425-677-2973

Timothy H Courson

Reg. 33300

Patent attorney

The Boeing Company

Seattle, WA · 98124-2207

206-662-6564

Graciela G. Cowger

Reg. 42444

Patent attorney

Schwabe Williamson & Wyatt

Vancouver, WA · 98660

360-694-7551

Iris Oren Cox

Reg. 52774

Patent attorney

Oreninc

Vancouver, WA · 98660

360-262-6969

Brian Joseph Coyne

Reg. 29911

Patent attorney

Brian J. Coyne, Esq.

Tumwater, WA · 98501

360-481-5279

Dean A Craine

Reg. 33591

Patent attorney

Bellevue, WA · 98005

425-637-3035

Tyson R. Crane

Reg. 64439

Patent attorney

Chang & Hale

Kirkland, WA · 98034

509-850-0920

Daniel D Crouse

Reg. 32022

Patent attorney

Seattle, WA · 98199

206-714-6416

Laura Alejandra Cruz

Reg. 46649

Patent attorney

Christensen O'Connor Johnson Kindness PLLC

Seattle, WA · 98101-3029

206-682-8100

Christopher J Culberson

Reg. 59136

Patent attorney

FIG. 1 Patents

Spokane, WA · 99201-3622

509-755-7266

Thomas A Culbert

Reg. 37117

Patent attorney

Microsoft Corporation

Redmond, WA · 98052

425-882-8080

Aaron T. Cunningham

Reg. 67318

Patent attorney

Lee & Hayes

Spokane, WA · 99201

509-324-9256

Kenneth D'Alessandro

Reg. 29144

Patent attorney

Kenneth D'Alessandro Attorney at Law

Colville, WA · 99114

570-251-0651

David K Daggett

Reg. 59686

Patent attorney

Davis Wright Tremaine LLP

Seattle, WA · 98101-3045

206-757-8066

Christopher J Daley-Watson

Reg. 34807

Patent attorney

Perkins Coie LLP

Seattle, WA · 98101

206-359-3599

Christopher P. Damitio

Reg. 80452

Patent attorney

Kilpatrick Townsend & Stockton, LLP

Seattle, WA · 98101

425-419-6186

Yu Ming Dammann

Reg. 58445

Patent attorney

Gilead Sciences

Seattle, WA · 98102

919-491-5292

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.