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 Microsoft Corporation, Joy Y. Xiang, and Lee & Haynes PC.

Top cities in Washington

All practitioners in Washington

Joy Y Xiang

Reg. 55747

Patent attorney

Joy Y. Xiang

Seattle, WA · 98105

206-880-0924

Dacheng Xie

Reg. 67267

Patent agent

Lee & Haynes PC

Spokane, WA · 99201

224-659-2453

Han Xue

Reg. 84173

Patent attorney

Seattle, WA · 98104

541-805-1825

Samuel I. Yamron

Reg. 59411

Patent attorney

Davis Wright Tremaine LLP

Seattle, WA · 98104

412-848-8066

Edward Yang

Reg. 77239

Patent attorney

Microsoft Corp

Redmond, WA · 98052

425-882-8080

Sen Yao

Reg. L0790

Limited recognition

Lee & Hayes, PLLC

Spokane, WA · 99201

206-876-6020

Kyle E. Yarberry

Reg. 70157

Patent attorney

IPkey PLLC

Bainbridge Island, WA · 98110

206-854-7562

Loria B Yeadon

Reg. 35063

Patent attorney

Yeadon IP LLC

Mercer Island, WA · 98040

425-449-0031

Gene H Yee

Reg. 57471

Patent attorney

Fenwick & West LLP

Seattle, WA · 98101

206-389-4535

Eva F Yin

Reg. 74922

Patent attorney

Wilson Sonsini Goodrich & Rosati

Seattle, WA · 98104

206-883-2572

Ying Y. Yiu

Reg. 81920

Patent agent

Cooley LLP

Seattle, WA · 98101

206-452-8825

W Brinton Yorks· Jr

Reg. 28923

Patent attorney

Woodinville, WA · 98072

206-399-0570

Atsushi Yoshida

Reg. 75661

Patent attorney

Alleman Hall Creasman & Tuttle LLP

Bellevue, WA · 98006

503-773-8172

Edward Makoto Yoshida

Reg. 30513

Patent attorney

PATH

Seattle, WA · 98121

206-302-6038

Rebecca S. Yoshitani

Reg. 58846

Patent attorney

Rebecca Slade Yoshitani

Bellevue, WA · 98006

443-812-5767

Logan P. Young

Reg. 79294

Patent attorney

Morgan, Lewis & Bockius LLP

Seattle, WA · 98101

206-274-6385

Steven Douglas Young

Reg. 43300

Patent attorney

Microsoft Corporation

Redmond, WA · 98052-6399

425-706-9527

Betty Miao Yu

Reg. 902973

Limited recognition

University of Washington School of Law

Seattle, WA · 98195-3020

678-267-9979

Linda S Zachariah

Reg. 48057

Patent attorney

Schwabe, Williamson & Wyatt, PLLC

Seattle, WA · 98101

206-689-1223

Kelsey L. Zaches

Reg. 75881

Patent agent

Wolfe-SBMC

Spokane, WA · 99201

509-755-7239

Kody J. Zalewski

Reg. 83820

Patent agent

Seattle, WA · 98115

206-854-6631

Elizabeth J. Zehr

Reg. 64013

Patent attorney

The Boeing Company

Maple Valley, WA · 98038

206-304-2675

Jorge Arnoldo Zelidon

Reg. 903264

Limited recognition

Seattle University School of Law

Seattle, WA · 98122-1090

415-513-7409

Bradley J Zentz

Reg. 76666

Patent attorney

Seed IP Law Group

Seattle, WA · 98104

206-859-5621

Honghao Zhang

Reg. 76097

Patent attorney

Microsoft Corporation

Redmond, WA · 98052

142-572-22634

Jeffrey Z Zhang

Reg. 78256

Patent agent

Issaquah, WA · 98027

858-231-8389

Jianping Zhang

Reg. 68796

Patent attorney

Lee & Hayes

Seattle, WA · 98101

206-876-6001

Charlie Zhao

Reg. 67843

Patent attorney

FLUKE CORPORATION

Everett, WA · 98203

425-446-5538

Jie Zhao

Reg. 77155

Patent agent

Proi Intellectual Property US

Camas, WA · 98607

360-440-4067

Tianci Zhao

Reg. 77932

Patent attorney

Arch & Lake LLP

Bellevue, WA · 98004

312-558-1369

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.