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, Quarles & Brady LLP, and Michael Best and Friedrich 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

William J. Ulrich

Reg. 81640

Patent agent

Waukesha, WI · 53189

414-587-3681

Christopher J. Unterberger

Reg. 81657

Patent agent

Quarles & Brady, LLP

Madison, WI · 53703

608-283-2484

Jeroen Valensa

Reg. 67197

Patent attorney

A. O. Smith Corp.

Milwaukee, WI · 53224

414-359-4083

Thomas E Valentyn

Reg. 33806

Patent attorney

Twin Disc, Incorporated

Racine, WI · 53403

262-638-4000

Sean B. Van Eysden

Reg. 78147

Patent agent

Michael Best & Friedrich LLP

Milwaukee, WI · 53202

414-225-2765

John M. Van Gilder

Reg. 79552

Patent agent

Hartland, WI · 53029

262-443-8340

Thomas J. Van Gilder

Reg. 58153

Patent attorney

Hurtland, WI · 53029

262-361-4091

Tambryn K VanHeyningen

Reg. 61522

Patent attorney

Quarles &Brady, LLP

Madison, WI · 53703

608-283-2423

Galo I Vargas

Reg. 53717

Patent attorney

Elm Grove, WI · 53122

414--70-8-3401

Stephanie Hope Vavra

Reg. 45178

Patent attorney

Quarles & Brady LLP

Milwaukee, WI · 53202

414-277-5454

Peter J. Volberding

Reg. 81028

Patent agent

Quarles & Brady LLP

Milwaukee, WI · 53202

414-277-5211

Michael J. Vorce

Reg. 67264

Patent agent

Brookfield, WI · 53005

262-391-8643

Alan E Wagner

Reg. 45188

Patent attorney

Sensient Technologies Corporation

Milwaukee, WI · 53202-5304

414-347-3958

William R Walbrun

Reg. 37464

Patent attorney

Rockwell Automation, Inc.

Milwaukee, WI · 53204

414-382-1314

Joshua J Walling

Reg. 80828

Patent agent

Milwaukee Tool

Brookfield, WI · 53005

800-729-3878

Scott D. Walter

Reg. 69891

Patent agent

S.C. Johnson & Son, Inc.

Racine, WI · 53403

262-260-5310

Xinxin Wang

Reg. 80758

Patent attorney

Brunswick Corporation

Fond du Lac, WI · 54935

414-736-1763

Jeffrey S Ward

Reg. 32774

Patent attorney

Green, Griffith & Borg-Breen LLP

Middleton, WI · 53562

312-883-8060

Wendy M Ward

Reg. 52205

Patent attorney

Polymer Forge, Inc.

Madison, WI · 53719

608-215-3728

Robert M Wawrzyn

Reg. 54654

Patent attorney

GE Healthcare

Wauwatosa, WI · 53226

414-721-2326

Karrie Gemignani Weaver

Reg. 43245

Patent attorney

Hudson, WI · 54016

612-386-0565

Callie L. Weber

Reg. 78962

Patent agent

Michael Best & Friedrich LLP

Milwaukee, WI · 53202

414-225-4975

Feng Wei

Reg. 73100

Patent attorney

Waukesha, WI · 53188

262-347-7936

Glen A Weitzer

Reg. 48337

Patent attorney

Michael Best and Friedrich LLP

Waukesha, WI · 53188-1174

262-956-6560

Teresa J Welch

Reg. 33049

Patent attorney

Michael Best and Friedrich LLP

Madison, WI · 53703

608-283-0108

Michael J. Wenzel

Reg. 84381

Patent agent

Foley & Lardner LLP

Milwaukee, WI · 53202

141-429-75033

Austin A. Wesner

Reg. 81976

Patent attorney

Michael Best & Friedrich LLP

Milwaukee, WI · 53202

414-277-3499

Pamela Rae Westmark

Reg. 49005

Patent attorney

Fitchburg, WI · 53711

563-503-4391

William A. White· IV

Reg. 78792

Patent agent

Foley & Lardner, LLP

Milwaukee, WI · 53202-5306

414-297-5105

Stephanie M Whitehorse

Reg. 53767

Patent agent

Wisconsin Alumni Research Fndtn

Madison, WI · 53726

608-265-5928

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.