Wisconsin DUI / OWI Defense · Available 24/7

Charged With a DUI in Wisconsin?
Act Now. Your License Depends On It.

Attorney Nathan J. Dineen has defended hundreds of Wisconsin OWI cases.
One call could protect your license, your job, and your future. Don't wait — the clock is already running.

⚠️ Warning: You have a limited window to request a hearing and protect your driver's license. Missing this deadline can result in automatic suspension. Call Nathan today.

Fill Out the Form Below 📞 1-877-384-6800

10

Avvo Rating

11×

Super Lawyers Designation

24/7

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Avvo 10.0 Rating Top 100 Trial Lawyers 2026 Super Lawyer · 11× Super Lawyers Designation National College for DUI Defense DUI Defense Lawyers Association ACS-CHAL Lawyer-Scientist Avvo 10.0 Rating Top 100 Trial Lawyers 2026 Super Lawyer · 11× Super Lawyers Designation National College for DUI Defense DUI Defense Lawyers Association ACS-CHAL Lawyer-Scientist

Meet Your Attorney

Nathan J. Dineen

Nathan J. Dineen is one of Wisconsin's most recognized DUI and OWI defense attorneys. His unique background as an ACS-CHAL Lawyer-Scientist gives him a technical advantage in challenging blood and breath test evidence that most defense attorneys simply don't have.

A 2026 Super Lawyer with 11 Super Lawyers designations, a Top 100 Trial Lawyer, and a member of the National College for DUI Defense — Nathan brings a level of preparation and specialization that can make all the difference in your case.

Available 24 hours a day, 7 days a week — because DUI charges don't wait for business hours.

ACS-CHAL Lawyer-Scientist — blood & breath test expert

Avvo 10.0 Rating — highest possible score

Top 100 Trial Lawyers — national recognition

2026 Super Lawyer — 11× Super Lawyers designation

National College for DUI Defense member

Available 24/7 — statewide Wisconsin coverage

Fill Out the Form Above

Frequently Asked Questions

What's the difference between a DUI and an OWI in Wisconsin? +

Wisconsin uses the term OWI (Operating While Intoxicated) rather than DUI. They refer to the same offense — operating a motor vehicle while impaired by alcohol, drugs, or a controlled substance. Wisconsin's OWI law applies to any vehicle, including boats and snowmobiles.

What are the penalties for a first OWI in Wisconsin? +

A first OWI is a civil offense with fines of $150–$300, a 6–9 month license revocation, possible ignition interlock device, and mandatory alcohol assessment. If there was a passenger under 16, it becomes criminal. Nathan can fight to reduce or dismiss these penalties.

Can I refuse a breathalyzer test in Wisconsin? +

Yes, but Wisconsin's implied consent law means refusal triggers automatic license revocation and can be used against you in court. You have a strict deadline to request a Refusal Review Hearing. Contact Nathan immediately — timing is critical.

Can blood or breath test results be challenged? +

Yes — and Nathan's ACS-CHAL Lawyer-Scientist certification gives him a rare ability to challenge the scientific validity of these tests. Issues with calibration, chain of custody, testing procedures, and officer training can all render results inadmissible.

How quickly do I need to act after an OWI arrest? +

Immediately. You have a very limited window — often 10 days — to request a hearing to fight your automatic license suspension. Call Nathan at 1-877-384-6800 as soon as possible after your arrest.

What areas of Wisconsin does Nathan serve? +

Nathan covers all of Wisconsin including Germantown, West Bend, Fond Du Lac, Oshkosh, Appleton, Manitowoc, Green Bay, Sturgeon Bay, Sister Bay, and surrounding counties. Available 24/7 at 1-877-384-6800.

No Attorney-Client Relationship

The information on this page is for general informational and marketing purposes only and does not constitute legal advice. Viewing this page or submitting a form does not create an attorney-client relationship between you and Nathan J. Dineen or Vanden Heuvel & Dineen, S.C. For legal advice specific to your OWI/DUI matter, contact our office at 1-877-384-6800 or duidefensewi.com.

Case Results Disclaimer

Prior case results referenced on this page are individual outcomes and do not guarantee similar results in your case. OWI/DUI defense outcomes vary based on specific facts, applicable Wisconsin law, jurisdiction, blood alcohol content, offense history, and individual circumstances. Nothing on this page constitutes a promise or guarantee of any particular result.

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Charged With a DUI in Wisconsin?Act Now. Your License Depends On It.

Nathan J. Dineen

Frequently Asked Questions

Charged With a DUI in Wisconsin?
Act Now. Your License Depends On It.