An OWI arrest in Oshkosh sets two separate deadlines against you, and the notices you’re handed start short clocks — not weeks later when your court date arrives. One deadline decides your license. If you refused testing, the “Notice of Intent to Revoke” starts a 10-day window to request a refusal hearing; if you took the test and came up over the limit, the “Notice of Intent to Suspend” starts a 10-day window to request administrative review. Either way, you have just 10 days to act in writing before the administrative machinery moves on its own. The other deadline belongs to the case itself, which will be heard right here in Oshkosh. Mays Law Office represents clients across Wisconsin from our office in Middleton — including Oshkosh and Winnebago County — defending OWI charges, the offense most drivers search under DUI or DWI, though Wisconsin’s statute names it OWI, along with drugged-driving allegations. Criminal OWI cases here are decided at the Winnebago County Courthouse on Jackson Street. Call 608-305-4518 for a free consultation before you talk to anyone else about your arrest.

OWI Attorneys in Oshkosh, WI

Attorney Stephen E. Mays has practiced law in Wisconsin since 1995 and was named a 2025 Wisconsin Super Lawyer in DUI/DWI defense. He belongs to the National Association of Criminal Defense Lawyers, the Wisconsin Association of Criminal Defense Lawyers, the Dane County Criminal Defense Lawyers Association, and the State Bar of Wisconsin. Oshkosh sits on the western shore of Lake Winnebago, where U.S. Highway 41 and State Highway 44 carry heavy daily traffic through and around the city. An OWI stop can come from any agency working these roads — city police, sheriff’s deputies, or the Wisconsin State Patrol. Knowing which agency made the stop, and how the charge is being handled, shapes the defense from the first day.

An OWI lawyer earns their fee in the details — whether the stop was lawful, whether the field sobriety tests actually prove what the officer wrote down, whether the blood draw survived the Fourth Amendment, and whether every deadline protecting your license was honored. Those are the questions a case needs answered from the start, and we start on them at the first call.

When to Call Our Oshkosh, WI OWI Lawyers

Reach out right away if any of this describes your situation:

• You were handed a “Notice of Intent to Revoke” after refusing a breath or blood test. You have 10 days to request a refusal hearing in writing. Let that window close and the revocation takes effect on its own 30 days after the notice is issued, and you lose the statutory chance to contest it.
• You took the test and blew over the limit. That produces a Notice of Intent to Suspend, and you have 10 days to request administrative review — otherwise a 6-month administrative suspension begins 30 days after the notice is issued.
• You already have an OWI on your record. A second offense is a criminal misdemeanor carrying 5 days to 6 months in jail when the prior falls within the last 10 years. A third runs 45 days to a year. A fourth is a Class H felony.
• A child under 16 was in the car. That single fact turns even a first offense into a criminal misdemeanor — a $350 to $1,100 fine and a mandatory 5 days to 6 months in jail.
• Someone was hurt. Causing injury while intoxicated makes even a first offense a crime, and great bodily harm or death brings separate felony charges.
• You hold a CDL. A single OWI conviction — even behind the wheel of your own car — disqualifies your commercial privileges for a year, and a second lifetime conviction ends them permanently.
• You were at 0.15 or above. On a first offense, that reading brings a mandatory one-year ignition interlock order.

What an OWI Conviction Costs in Wisconsin

Wisconsin writes its drunk-driving law under a single name — operating while intoxicated, or OWI. People search for DUI and DWI lawyers, but those are everyday labels for the same charge. What the charge costs you depends first on your history — and then on aggravating facts like a high BAC, a refusal, or a passenger under 16. A standard first offense is not a crime at all: it is a civil forfeiture of $150 to $300 plus a mandatory $435 surcharge, with no jail — but your license is revoked for six to nine months. A second offense becomes a criminal misdemeanor when the prior falls within the past ten years, carrying five days to six months in jail. At the third offense, the counting changes: every qualifying prior in your lifetime counts — including OWI convictions, implied-consent refusal revocations, OWI-related injury convictions, and comparable out-of-state offenses — and jail runs from 45 days up to a year. A fourth offense is a Class H felony punishable by 60 days to six years of imprisonment. Certain facts short-circuit that ladder entirely — a passenger under 16 turns even a first offense into a criminal misdemeanor with a $350-to-$1,100 fine and a mandatory five days to six months behind bars. An ignition interlock is required after a test refusal, a first offense at 0.15 or above, or any repeat offense. An occupational license may keep you driving to work, but eligibility is never automatic — it depends on the type of suspension, any interlock requirement, the rest of your record, and DMV approval. And whichever way your case starts, you generally have just 10 days from your notice to request a refusal hearing or administrative review.

The fine on the citation is the smallest number in an OWI case. Wisconsin adds a mandatory $435 surcharge to every OWI conviction, and the court-ordered alcohol and drug assessment typically runs $165 to $500 depending on the county. If an interlock is ordered, plan on roughly $50 to $150 for installation and $60 to $100 a month while the order lasts. Getting your license back costs another $200 reinstatement fee, and SR-22 high-risk insurance keeps raising the price for years afterward. Add it together and a typical first offense lands between $4,000 and well over $10,000 all-in. Those are typical ranges, not quotes — your county, your vendor, and your insurer set the real numbers.

How OWI Cases Move Through Oshkosh and Winnebago County Courts

Oshkosh is the seat of Winnebago County, which means the courthouse that hears your case is in your own city rather than an hour down the interstate. A standard civil first-offense OWI written inside the city may be processed as a non-criminal forfeiture — depending on the citing agency, that can run through a municipal court or through the county circuit court. Every criminal OWI — a repeat offense, or a first offense involving a minor passenger or injury — is filed in the Winnebago County Circuit Court at 415 Jackson Street in Oshkosh, a six-branch court, and prosecuted by the county District Attorney’s Office. Because the county seat sits in Oshkosh itself, the arrest, the charge, and the hearings all stay close to home.

An OWI stop can come from any agency working these roads — city police, sheriff’s deputies, or the Wisconsin State Patrol. Which agency stopped you can affect the reports, the squad video, and how the case is assembled, which is one of the first things our Wisconsin OWI defense practice sorts out. The paper trail from a Lake Winnebago-area stop is not always as tidy as the citation makes it look, and the gaps are where a defense begins.

The criminal track follows a set path. The arresting agency forwards its file to the District Attorney, who issues a criminal complaint; you make an initial appearance; contested issues get litigated at motion hearings; and if a pretrial conference produces no resolution, the case goes to trial, where the State must prove guilt beyond a reasonable doubt. On the civil first-offense side, the standard is different — in a municipal court, an ordinance OWI is proven by “clear, satisfactory and convincing” evidence rather than the criminal standard, which is one more reason the classification of your charge matters from day one.

How We Defend OWI Charges

An OWI prosecution is a chain of moving parts, and each part can fail. The first is the stop itself: an officer needs reasonable suspicion to pull you over and probable cause to arrest, and when either is missing, a court can suppress the evidence gathered afterward. The second is the roadside testing. The three standardized field sobriety tests were validated on narrow research populations, and age, weight, injuries, medical conditions, footwear, and the weather can all generate “clues” in a perfectly sober driver. The third is the chemical evidence. A breath number at or near the legal limit — 0.08 for most drivers, though stricter limits apply behind the wheel of a commercial vehicle (0.04), for drivers under 21 (absolute sobriety), and for drivers under an interlock order or with three or more priors (0.02) — is a measurement, not a verdict — the reliability of chemical testing is one of the recognized fronts for challenging an OWI, and once you submit to the agency’s primary test, Wisconsin law lets you request the agency’s alternative test free of charge — or arrange a test of your own choosing at your own expense. Blood draws raise a separate constitutional question: taking blood is a Fourth Amendment search, and in State v. Prado (2021) the Wisconsin Supreme Court struck down the implied-consent provision that presumed consent from an incapacitated driver. Not every warrantless draw gets suppressed — the State can point to exceptions like exigent circumstances — but a draw taken without a warrant and without valid consent deserves scrutiny in every case. Finally, the State must prove “operation” — the physical manipulation or activation of a vehicle’s controls necessary to put it in motion. That element is fact-specific, and facts can be contested. Which of these doors is open in your case depends on the reports, the video, and the timeline — call 608-305-4518 before those details go cold.

We also handle the license side of the case — refusal hearings and occupational license applications. An occupational license is not automatic; eligibility depends on the type of suspension, any interlock requirement, other suspensions on your record, and DMV approval, so the paperwork is worth getting right the first time.

Oshkosh OWI Questions We Hear Most

Will I go to jail for a first-offense OWI in Wisconsin?

For a standard first offense, no. Wisconsin is the only state that treats a first OWI as a non-criminal civil forfeiture — a fine and license revocation, but no jail. That changes fast if a child under 16 was in the car — a criminal misdemeanor with a mandatory 5 days to 6 months in jail — or if anyone else was injured, which also criminalizes the charge.

Where will my Oshkosh OWI case actually be heard?

In Oshkosh. Because the city is the seat of Winnebago County, the courthouse is right here rather than in another town. A criminal OWI — a repeat offense, or a first offense with a minor passenger or injury — is filed in the Winnebago County Circuit Court at 415 Jackson Street and prosecuted by the county District Attorney. A standard civil first offense is handled as a non-criminal forfeiture, which — depending on the citing agency — may run through a municipal court or the circuit court. Either way, whether your stop came from Oshkosh police, a Winnebago County deputy, or a State Patrol trooper, the case stays close to home.

Can I still drive to work?

Often, yes — but it is not automatic. An occupational license permits up to 12 hours of driving per day and 60 hours per week for work, school, medical appointments, treatment, and essential household duties — never recreation. Eligibility depends on the type of suspension or revocation, any interlock requirement, other suspensions on your record, and DMV approval — and the timing rules differ by situation, so we confirm your exact eligibility window before filing. The application runs through WisDOT paperwork, an SR-22 filing from your insurer, and proof of interlock installation where ordered — we can help prepare and review the application and supporting filings.

I have a CDL. What does an OWI do to my commercial license?

A first OWI conviction disqualifies your commercial driving privileges for 1 year — even if you were driving your personal vehicle at the time — and for 3 years if you were hauling placarded hazardous materials. A second lifetime OWI conviction means lifetime CDL disqualification. Commercial drivers also operate under a stricter 0.04 limit in a commercial vehicle, and any detectable alcohol triggers an immediate 24-hour out-of-service order.

I wasn’t impaired — can they still charge me for drugs in my system?

Yes. Wisconsin’s restricted-controlled-substance law is zero-tolerance: operating with a detectable amount of a restricted controlled substance such as cocaine, methamphetamine, or Delta-9-THC in your blood supports a charge regardless of whether you showed any actual impairment — the one narrow statutory exception is Delta-9-THC below one nanogram per milliliter of blood. And because Wisconsin does not recognize recreational or medical marijuana, a prescription or legal purchase in another state is not a defense.

Get a Free Consultation

Se Habla Español — Call 608-305-4518

Whether this is a civil first offense or a felony repeat charge, the days right after an Oshkosh OWI arrest are the ones that matter most. Call 608-305-4518 or contact Mays Law Office online for a free consultation. Mays Law Office, LLC — 6405 Century Ave STE 103, Middleton, WI 53562.