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 Seed Intellectual Property Law Group LLP, Lee & Hayes, PC, and Cascadia Intellectual Property.

Top cities in Washington

All practitioners in Washington

Robert Iannucci

Reg. 33514

Patent attorney

Seed Intellectual Property Law Group LLP

Seattle, WA · 98104

206-622-4900

Christopher T Igielski

Reg. 44794

Patent attorney

Seattle, WA · 98102

253-250-5400

Maki Imakura

Reg. 68118

Patent attorney

Shoreline, WA · 98177

206-465-8610

Blake A Impecoven

Reg. 77990

Patent agent

Lee & Hayes, PC

Spokane, WA · 99201

509-944-4679

Patrick J S Inouye

Reg. 40297

Patent attorney

Cascadia Intellectual Property

Lynnwood, WA · 98046

206-532-6690

Mika Ito

Reg. 71201

Patent attorney

Kilpatrick Townsend & Stockton LLP

Seattle, WA · 98101

206-626-7712

Kevin D Jablonski

Reg. 50401

Patent attorney

FisherBroyles LLP

Seattle, WA · 98104-5119

206-235-8125

Garrett G. Jackson

Reg. 82463

Patent agent

Gilliam IP PLLC

Redmond, WA · 98052

425-864-6631

Gregory C Jackson

Reg. 44167

Patent attorney

PATH

Seattle, WA · 98121

206-302-4949

Daniel L. Jackstadt

Reg. 74963

Patent attorney

Dorsey & Whitney LLP

Seattle, WA · 98104-7043

206-903-2429

Christopher C Jacob

Reg. 53059

Patent attorney

SEATTLE, WA · 98115

206-979-0516

Spencer Jacobs

Reg. 82186

Patent agent

Lee & Hayes PC

Spokane, WA · 99201

509-324-9256

Eric DeVerne Jacobsen

Reg. 37854

Patent agent

Bellevue, WA · 98004

425-822-7224

Jordan T. Jacobson

Reg. 70225

Patent attorney

Kirkland, WA · 98034

425-269-3623

Pkohli Kaur Jacobson

Reg. 59309

Patent attorney

K&L Gates

Seattle, WA · 98104-1158

206-370-7605

Dorothy E H Jaffe

Reg. 53063

Patent attorney

WA State Attorney Generals Office

Olympia, WA · 98504

360-586-3158

Paul M Janeski

Reg. 83719

Patent agent

Janeski Consulting

Spokane, WA · 99201

564-215-4954

John M Janeway

Reg. 45796

Patent attorney

Janeway Patent Law PLLC

Seattle, WA · 98107

206-708-7705

James Sabin Jantos

Reg. 51844

Patent attorney

James S, Jantos, Attorney At Law

Mercer Island, WA · 98040

206-232-0639

John S Jardine

Reg. 48835

Patent attorney

Microsft Corpoation

Redmond, WA · 98005

425-538-7123

William A Jeckle

Reg. 55825

Patent attorney

Randall Danskin, PS

SPOKANE, WA · 99201

509-747-2052

Chen Jen

Reg. 71976

Patent agent

Boeing

Seattle, WA · 98115

206-295-9776

Robert Arthur Jensen

Reg. 24268

Patent attorney

Jensen and Puntigam P.S.

Seattle, WA · 98121

206-448-3200

Yi Ji

Reg. 77853

Patent attorney

Renton, WA · 98058

626-493-6626

Peigen Jiang

Reg. 57042

Patent agent

Sammamish, WA · 98075

425-427-9298

Anthony J Johnson

Reg. 71104

Patent attorney

Fortem IP

Seattle, WA · 98101

206-578-3594

Brian L Johnson

Reg. 40033

Patent attorney

Grandview Law PLLC

Ferndale, WA · 98248-1594

360-778-3329

Bruce L Johnson

Reg. 64851

Patent attorney

Johnson Inventors

Woodinville, WA · 98072

425-420-6124

Corinne F Johnson

Reg. 69810

Patent agent

Seattle, WA · 98112

303-929-4607

Jessica R. Johnson

Reg. 84139

Patent attorney

Clarkston, WA · 99403

812-870-3291

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.