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Wisconsin

Patent attorneys in Wisconsin

Wisconsin hosts 724 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 Wisconsin. 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 Michael Best & Friedrich LLP, Foley & Lardner LLP, and Attorney At Law.

Top cities in Wisconsin

Milwaukee287Madison145Neenah30Waukesha22Middleton22Brookfield18Wauwatosa17Racine17Appleton9Hudson8Hartland6Mequon5Elm Grove5Germantown4Oshkosh4Eau Claire3Waunakee3Verona3Shorewood3La Crosse3

All practitioners in Wisconsin

Dana J Zelazny

Reg. 58406
Patent attorney

Michael Best & Friedrich LLP

Milwaukee, WI · 53202

414-271-6560

Joseph N Ziebert

Reg. 35421
Patent attorney

Foley & Lardner LLP

Milwaukee, WI · 53211

414-297-5768

Walter E Zimmerman

Reg. 40883
Patent attorney

Attorney At Law

Hartland, WI · 53029

262-369-9920

Timothy J Ziolkowski

Reg. 38368
Patent attorney

Ziolkowski Patent Solutions Group, SC

Port Washington, WI · 53074

262-268-8100

Common questions

Do I need a patent attorney based in Wisconsin?
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 Wisconsin-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 Wisconsin?
724 active USPTO-registered patent practitioners list a Wisconsin 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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