Wisconsin Rising Star
Recognition from Super Lawyers Magazine.
Wisconsin DUI & OWI Lawyer
Strategic DefenseFrom Stop to Trial
A strong DUI or OWI defense begins with a detailed review of the traffic stop, field sobriety testing, chemical results, video, and police procedure.
Focused OWI Representation
Your Case Deserves More Than a Routine Review
Wisconsin impaired-driving cases can affect driving privileges, employment, insurance, reputation, and freedom. Every stage of the case should be evaluated carefully.
Nathan J. Dineen has training in standardized field sobriety testing, drug-recognition evaluation, and the science behind blood and breath testing.
Traffic StopField TestsBlood & BreathLicense Defense
Recognitions & Achievements
Recognized for DUI Defense and Trial Advocacy
Nathan J. Dineen’s professional recognition reflects his focus on impaired-driving defense, courtroom preparation, and the technical evidence frequently used in Wisconsin OWI cases.
Top 40 Under 40 Trial Lawyer
Recognition from the National Trial Lawyers Association.
American Chemical Society Designation
Chemistry and the Law Division recognition relevant to forensic and chemical evidence.
Leading DUI Defense Attorney
Recognized as a leading DUI defense attorney in Milwaukee.
Top Rated DUI Defense Attorney
Listed among Top Rated DUI Defense Attorneys by M Magazine.
DUIDLA Keynote Speaker
Keynote speaker at the 2016 DUIDLA Winter Seminar on voir dire and cross-examination in a drug-impaired-driving case.
How We Approach the Case
A Clear Defense Process
Analyze the Stop
Review why the vehicle was stopped and whether the officer had a lawful basis to continue the investigation.
Test the Evidence
Examine field tests, video, breath or blood results, laboratory procedure, and chain of custody.
Prepare the Strategy
Identify motions, defenses, negotiation options, and the evidence needed for hearings or trial.
What We Review
Every Part of the OWI Case Matters
A DUI or OWI case is built from several separate pieces of evidence.
Traffic Stop
Whether the officer had reasonable suspicion and whether the detention was lawfully extended.
Field Sobriety Testing
Instructions, conditions, scoring, officer training, and whether the tests were administered properly.
Breath Testing
Calibration, maintenance, observation periods, operator procedure, and physiological factors.
Blood Testing
Collection, storage, chain of custody, laboratory methods, quality control, and interpretation.
License Consequences
Administrative deadlines, refusal allegations, occupational-license issues, and revocation exposure.
Video & Statements
Body camera, squad video, dispatch records, witness accounts, and statements made during the investigation.
Professional Background
Training Built for Scientific Evidence
Nathan’s background includes specialized training relevant to impaired-driving investigations and chemical testing.
- Instructor certification involving Standardized Field Sobriety Testing and Drug Recognition Evaluation
- Training involving breath-testing equipment, intoxilyzer calibration, toxicology, biology, anatomy, and physiology
- Experience analyzing search-and-seizure issues, DMV administrative hearings, and expert defense witnesses
- American Chemical Society — Chemistry and the Law Division designation
- Keynote speaker at the 2016 DUIDLA Winter Seminar in Scottsdale, Arizona
Education, Admissions & Memberships
Built on Legal Training and Continued DUI Education
Nathan earned a Bachelor of Arts in Political Science with honors from Lawrence University and his Juris Doctor from Ave Maria School of Law. During law school, he interned with the United States Attorney’s Office for the Eastern District of Wisconsin.
He continues to attend DUI-defense programs addressing scientific evidence, field testing, police procedure, administrative hearings, search and seizure, and expert testimony.
Admissions
- State of Wisconsin
- Seventh Circuit Court of Appeals
- Eastern District of Wisconsin
- Western District of Wisconsin
- Wisconsin county courts
Professional Memberships
- National Association of Criminal Defense Lawyers
- National College for DUI Defense
- American Bar Association — Criminal Justice Division
- Wisconsin Association of Criminal Defense Lawyers
- Wisconsin Association for Justice
- Milwaukee Bar Association
Common Questions
Frequently Asked Questions
Every case depends on its own facts. A consultation can help clarify the next step.
Wisconsin uses the term OWI, while DUI is commonly used as a general description of impaired driving.
Yes. Conditions, instructions, officer training, physical limitations, and scoring may all be relevant.
The answer depends on the alleged offense, test result, refusal issues, prior history, and applicable deadlines.
Find Us
Five Locations Across Wisconsin
Contact the firm to confirm the best location or meeting arrangement for your case.
Appleton
4650 W Spencer St., Suite 23Appleton, WI 54914 Get Directions →
Germantown
W175N11086 Stonewood DrGermantown, WI 53022 Get Directions →
West Bend
246 S 5th Ave.West Bend, WI 53095 Get Directions →
Sturgeon Bay
342 Louisiana StreetSturgeon Bay, WI 54235 Get Directions →
Sister Bay
10589 S Highland Rd., Suite 9Sister Bay, WI 54234 Get Directions →
Ready to Protect Your Future?
Let’s Build
Your Defense
Discuss the stop, testing, license issues, and the court handling your OWI or DUI matter.
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(877) 384-6800Call us to discuss your case
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100% ConfidentialYour information is handled with care