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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 Christensen O'Connor Johnson Kindness PLLC, DLA PIPER LLP (US), and Zigler Family Law, PLLC.

Top cities in Washington

Seattle660Spokane129Redmond99Bellevue86Vancouver31Bothell30Kirkland24Issaquah19Mercer Island19Bellingham17Sammamish16Richland15Lynnwood15Renton14Bainbridge Island14Woodinville10Edmonds10Federal Way9Everett9Mill Creek9

All practitioners in Washington

Juan Zheng

Reg. 63514
Patent attorney

Christensen O'Connor Johnson Kindness PLLC

Seattle, WA · 98101-3029

206-682-8100

Shaobin Zhu

Reg. 62741
Patent agent

DLA PIPER LLP (US)

Seattle, WA · 98104-7029

206-839-4894

Shaopeng Zhu

Reg. 800158
Limited recognition

Bellevue, WA · 98007

530-379-6215

Kenneth R Zigler· Jr

Reg. 77053
Patent attorney

Zigler Family Law, PLLC

Spokane, WA · 99201

509-818-5555

Elizabeth L D Zinke

Reg. 71581
Patent attorney

Lee & Hayes, PLLC

Seattle, WA · 98101

206-315-4001

Mark J Zovko· Jr

Reg. 27849
Patent attorney

Federal Way, WA · 98003

253-838-1909

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.
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