Mackall, Crounse & Moore, PLC has joined Dewitt Ross & Stevens S.C.

The newly formed DeWitt Mackall Crounse & Moore S.C. will provide clients with enhanced legal services
and efficiencies as well as access to more than 100 attorneys practicing in nearly 30 areas of
law in Wisconsin and Minnesota.

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Van Sicklen
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Barret V. Van Sicklen

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Vicki L. Owen

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Barret is the Co-Chair of the Firm’s Litigation Practice Group, one of DeWitt’s largest practice groups with more than 70 attorneys across three offices. Barret has a diverse practice, focusing primarily on complex business disputes and labor and employment litigation. Barret provides skilled representation to his clients in state and federal courts, as well as before various administrative agencies.

He has handled a wide array of general commercial litigation matters. He assists companies with the diverse and evolving legal problems they may face, including shareholder/partnership disputes, contract issues, indemnification, collecting on unpaid accounts, landlord/tenant, theft of company information, and insurance coverage issues, to name a few.

His labor and employment practice consists primarily of representing employers in hiring, firing, wage and hour, and discrimination litigation. Barret also works with employers to develop best practices in order to avoid such disputes. He has significant experience litigating the enforceability of non-compete, non-solicitation and confidentiality agreements.

Barret takes pride in providing effective, timely and efficient representation to his clients. Clients have described him as approachable, relatable and able to convey complex legal issues in a manner that can be easily understood. When not in the office, Barret spends his free time with his wife, chasing after their two children and dog.


Barret provides skilled representation throughout the court system of Wisconsin. He also routinely practices in the Western and Eastern Districts of Wisconsin and the United States Court of Appeals for the 7th Circuit. Additionally, he routinely helps shareholders advise and represent construction companies in a variety of areas, including: contract disputes, indemnification issues, bid process, lien rights, and collecting on unpaid accounts. His labor and employment practice focuses on protecting companies’ confidential information, non-compete disputes, and wage and hour issues. His practice also includes guiding landlords through the eviction process and helping businesses collect on outstanding accounts.

Client Recommendations

“Barret has helped me on more than one occasion resolve some landlord/tenant and collection issues. He has resolved these with positive results in an effective, timely and professional manner. I highly recommend Barret and his law firm, and I will use him again in the future if need be.” – John McGrady, Vice President (Dean Realty Group, Inc.)

Notable Representations

  • Successfully argued in front of the Wisconsin Supreme Court to end giving deference to agency’s conclusions of the law in Tetra Tech EC, Inc. v. DOR. The court agreed with his arguments and its decision received national attention in reversing its nearly half-century practice of deferring to state administrative agencies’ interpretations of the laws the agencies are responsible for enforcing.

  • Successfully represented a construction company as a plaintiff in a lawsuit against another construction company alleging, among other claims, breach of contract, unjust enrichment and misrepresentation.

  • Represented a Wisconsin electronics company that skillfully obtained an injunction against a former employee from using its confidential information. The suit involved allegations of unfair competition, tortious interference with business expectancy and theft.

  • Represented a construction company as a plaintiff against a sub-contractor involving indemnification and insurance coverage issues.

  • Aided several nursing homes to obtain and collect on judgments throughout Wisconsin.

  • Successfully defended a dairy company from a wrongful refusal to rehire claim.

  • Regularly assists contractors and design professionals with respect to lien rights.

  • Successfully defended real estate developer on breach of contract and foreclosure on bond claims.

  • Assisted a construction company in an arbitration proceeding related to alleged design defects.

  • Successfully represented engineering company on breach of fiduciary duty, breach of contract, and related claims.

  • Routinely assists construction and design professional companies with respect to collection matters.

Our Locations

We are currently limiting the amount of outside visitors to the firm.  

Please work directly with your attorney who will coordinate any onsite visits to ensure the safety of our clients and colleagues.


2 East Mifflin Street, Suite 600
Madison, WI 53703
(608) 255-8891
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Greater Milwaukee

13845 Bishop’s Drive, Suite 300
Brookfield, WI 53005
(262) 754-2840
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2100 AT&T Tower,
901 Marquette Avenue
Minneapolis, MN 55402
(612) 305-1400
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Get to know us

DeWitt LLP is one of the ten largest law firms based in Wisconsin, with an additional presence in Minnesota. It has more than 120 attorneys practicing in Madison, Metropolitan Milwaukee and Minneapolis in over 30 legal practice areas, and has the experience to service clients of all scopes and sizes.

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We are an active and proud member of Lexwork International, an association of mid-sized independent law firms in major cities located throughout the Americas, Europe and Asia and an active member of SCG Legal, an association of more than 140 independent law firms serving businesses in all 50 state capitals and major commercial centers around the world.


Best Lawyers 2013 – 2020
Super Lawyers 2020
Compass Award 2012
Top 100 Lawyers: National Trial Lawyers Association Best in 2020


While we would like to hear from you, we cannot represent you until we know that doing so will not create a conflict of interest. Accordingly, please do not send us any information about any matter that may involve you until you receive a written statement from us that we represent you (an “engagement letter”). You will not be a client of the firm until you receive such an engagement letter.

The best way for you to initiate a possible representation is to call DeWitt LLP at 608-255-8891. We will make every effort to put you in touch with a lawyer suited to handle your matter. When you receive an engagement letter from one of our lawyers, you will be our client and we may exchange information freely.

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