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 Foley & Lardner LLP, Andrus Intellectual Property Law, LLP, and Quarles & Brady LLP.

Top cities in Wisconsin

Milwaukee287 Madison145 Neenah30 Waukesha22 Middleton22 Brookfield18 Wauwatosa17 Racine17 Appleton9 Hudson8 Hartland6 Mequon5 Elm Grove5 Germantown4 Oshkosh4 Eau Claire3 Waunakee3 Verona3 Shorewood3 La Crosse3

All practitioners in Wisconsin

Melissa Jeddeloh El Menaouar

Reg. 72069

Patent attorney

Foley & Lardner

Madison, WI · 53703

608-258-4475

Timothy J Engling

Reg. 39970

Patent attorney

Middleton, WI · 53562

312-371-0034

Harry C Engstrom· Jr

Reg. 26876

Patent attorney

Foley & Lardner LLP

Madison, WI · 53701

608-258-4207

Elizabeth A Epstein

Reg. 69036

Patent agent

E Epstein Patent Agency

Sun Prairie, WI · 53590

608-891-1278

Donald J Ersler

Reg. 38753

Patent attorney

Donald J. Ersler, S.C.

Elm Grove, WI · 53005

262-785-0160

Gary A Essmann

Reg. 29376

Patent attorney

Andrus Intellectual Property Law, LLP

Milwaukee, WI · 53202

414-271-7590

Benjamin E Evans

Reg. 60293

Patent attorney

Micheal Best & Friedrich LLP

Madison, WI · 53703

608-257-3501

Edward J Evans

Reg. 61576

Patent attorney

Michael Best and Friedrich, LLP

Waukesha, WI · 53188-1174

262-956-6548

Michael E Falk

Reg. 48354

Patent attorney

Wisconsin Alumni Research Fndtn

Madison, WI · 53705

608-263-2500

William L Falk

Reg. 27709

Patent agent

Andrus Intellectual Property Law, LLP

Milwaukee, WI · 53202

414-271-7590

Navid Fanaeian

Reg. 56758

Patent attorney

Foley & Lardner LLP

Madison, WI · 53703

608-258-4266

Matthew Mark Fannin

Reg. 51268

Patent attorney

Jansson, Shupe & Munger

Racine, WI · 53403

262-632-6900

Erin K Fay

Reg. 56349

Patent attorney

Oakton Avenue Law Office, S.C.

Pewaukee, WI · 53072

262-691-2726

Tatstsana V Fenster

Reg. 62320

Patent agent

Cree Lighting USA LLC

Racine, WI · 53406

414-378-0298

Peter D Ferguson

Reg. 27753

Patent attorney

La Crosse, WI · 54601

608-785-0860

Samuel J. Ferris

Reg. 84062

Patent attorney

Quarles & Brady LLP

Milwaukee, WI · 53202

414-277-5000

Daniel Dawson Fetterley

Reg. 20323

Patent attorney

Andrus Sceales Starke and Sawall LLP

Milwaukee, WI · 53202

414-271-7590

Randall W Fieldhack

Reg. 43611

Patent attorney

Faith Technologies, Inc.

Menasha, WI · 54952

920-751-9877

Craig A Fieschko

Reg. 39668

Patent attorney

DeWitt LLP

Madison, WI · 53703

608-395-6722

Karen A Fitzsimmons

Reg. 50470

Patent attorney

Hayward, WI · 54843

715-462-4431

David T Flanagan· III

Reg. 31781

Patent attorney

Law Office of David Flanagan

Madison, WI · 53704

608-206-5594

Terri S Flynn

Reg. 41756

Patent attorney

Quarles and Brady, LLP

Milwaukee, WI · 53202

414-277-5229

Rory E Foster

Reg. 68703

Patent attorney

Quarles & Brady LLP

Madison, WI · 53703

608-283-2417

William B. Fox

Reg. 82866

Patent attorney

Godfrey & Kahn, S.C.

Madison, WI · 53703

608-347-1416

John D Franzini

Reg. 31356

Patent attorney

Quarles and Brady LLP

Milwaukee, WI · 53202

414-277-5747

Grady J Frenchick

Reg. 29018

Patent attorney

Grady J. Frenchick, LTD.

Weyerthaeuser, WI · 54895

608-334-3014

Jacob M Fritz

Reg. 71459

Patent attorney

Ziolkowski Patent Solutions Group, SC

Port Washington, WI · 53074

262-268-8100

Jonathan Michael Fritz

Reg. 52922

Patent attorney

Alpha Tech Counsel, S.C.

Madison, WI · 53717

Samuel Valentine Bender Fritz

Reg. 78948

Patent agent

Foley and Lardner

Milwaukee, WI · 53202

414-319-7352

Brian P. Frushour

Reg. 72685

Patent agent

Wisconsin Alumni Research Foundation

Madison, WI · 53726

608-890-1830

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.