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 AMPACC Law Group, PLLC, The Boeing Company, and Stoel Rives LLP.

Top cities in Washington

All practitioners in Washington

Im Seon Song

Reg. 76000

Patent agent

AMPACC Law Group, PLLC

Lynnwood, WA · 98037

425-348-3500

Kathryn A Soucy

Reg. 66745

Patent agent

The Boeing Company

Seattle, WA · 98124-2207

206-662-6624

Jennifer Lane Spaith

Reg. 51916

Patent attorney

Stoel Rives LLP

Seattle, WA · 98101

206-386-7511

John F Spears· Jr

Reg. 27392

Patent agent

Port Angeles, WA · 98362

360-452-2483

Ann W Speckman

Reg. 31881

Patent attorney

DWC Law Firm, P.S.

Seattle, WA · 98104

206-583-2609

Steven J Spellman

Reg. 45124

Patent attorney

Microsoft Corporation

Redmond, WA · 98052

425-707-9382

Allan T Sponseller

Reg. 38318

Patent attorney

Wolfe-SBMC

Spokane, WA · 99201-3622

509-755-7255

Steven R Sponseller

Reg. 39384

Patent attorney

Innovation Strategies, Inc.

Spokane, WA · 99208

509-389-0584

Suzanne A Sprunger

Reg. 41323

Patent agent

Port Townsend, WA · 98368

360-649-7188

Michael C Staggs

Reg. 50938

Patent attorney

Washington State University

Pullman, WA · 99164

209-362-0574

Brandon Carl Stallman

Reg. 46468

Patent attorney

Christensen O'Connor Johnson and Kindness, PLLC

Seattle, WA · 98101-3029

206-682-8100

Ryan J Stamper

Reg. 45802

Patent agent

716 N 89th St

Seattle, WA · 98103

206-579-7468

Daniel John Stanger

Reg. 32846

Patent attorney

Han Santos, PLLC

Seattle, WA · 98101

703-691-5648

Addison M. Staples

Reg. 83233

Patent agent

Lee and Hayes PC

Spokane, WA · 99201

509-324-9256

Matthew C Staples

Reg. 56705

Patent attorney

Wilson Sonsini Goodrich & Rosati, P.C.

Seattle, WA · 98104

206-883-2500

Aaron M Staser

Reg. 72212

Patent attorney

Seattle, WA · 98103

206-678-5909

Michael D Stein

Reg. 34734

Patent attorney

BELLEVUE, WA · 98004

425-223-7000

Kevin T Steinacker

Reg. 53636

Patent agent

Dickson Maher Ingels LLP

Tacoma, WA · 98402

253-572-1000

Gloria M Steinberg

Reg. 72347

Patent attorney

Bothell, WA · 98012

267-270-2051

Ronald Stern

Reg. 59705

Patent attorney

Makor Law Group, PLLC

Seattle, WA · 98105

707-336-2610

James D. Stevens

Reg. 80375

Patent agent

Stevens Patent Law LLC

Steilacoom, WA · 98388

253-312-6568

Douglas Fred Stewart

Reg. 51060

Patent attorney

Bracewell LLP

Seattle, WA · 98104

206-204-6271

John C Stewart

Reg. 40188

Patent attorney

Mercer Island, WA · 98040

206-232-4070

Katlyn E. Stockslager

Reg. 79896

Patent attorney

Seattle, WA · 98101

206-359-6062

Barry A. Stolzman

Reg. 35374

Patent attorney

Blackberry

Seattle, WA · 98144

972-400-2145

Leif T Stordal

Reg. 46251

Patent attorney

Law Office of Leif Stordal, PLLC

Newcastle, WA · 98059

425-572-0780

Harold M Storey

Reg. 66796

Patent attorney

K&L Gates LLP

Seattle, WA · 98104

206-623-7580

Ned M. Stratton

Reg. 64122

Patent agent

Stratton Law Office

Kennewick, WA · 99336

509-222-4736

Kyle B Straughan

Reg. 73300

Patent attorney

Karr Tuttle Campbell

Seattle, WA · 98104

206-224-8077

Ryan N Strauss

Reg. 68392

Patent attorney

KILPATRICK TOWNSEND & STOCKTON, LLP

Seattle, WA · 98101

206-626-7744

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.