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John T. Bayer

John T. Bayer

Practice areas:


About Me

John T. Bayer is an experienced trial lawyer who is truly passionate about advocating on behalf of his clients. John has dedicated his career exclusively to advising and counseling individuals who have been arrested for OWI. To ensure the best defense, John keeps up-to-date with the latest forensic science concerning breath and blood tests.

John Bayer grew up in Green Bay, Wisconsin. After graduating with his B.A in English from the University of Wisconsin-Madison in 2006, John earned his law degree from Marquette University Law School in 2009. He continued to go on and passed the California State Bar Exam.

John started his practice in Milwaukee, where he has established himself as a zealous advocate for his clients. John not only represents OWI clients locally, but throughout Wisconsin. He is a valued member of the Wisconsin Association of Criminal Defense Lawyers, as well as the National College of Drunk Driving Defense. His membership to the NCDD keeps him continuously collaborating with the best drunk driving defense lawyers in the Nation.


Practice Areas

Licensed since 2009

  1. DUI & DWI: 100%
    5 years



Free Consultation (30 minutes)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

11 total 

  • Ryan Kastelic

    My. Bayer is a compassionate hard working attorney and very knowledgeable in his area of practice. I have referred clients and even friends to Mr. Bayer and will continue to do so in the future.


    Ryan Kastelic Employment & Labor Attorney
    Relationship: Fellow lawyer in community

  • Christopher M. Glinski

    John is an excellent lawyer who works hard for his clients and consistently gets great results. You are in good hands with John Bayer.


    Christopher Glinski Criminal Defense Attorney
    Relationship: Fellow lawyer in community

Contact Info

Law Offices of John T Bayer

230 W Wells St
Suite 706
Milwaukee, WI, 53203


WIGood Standing200903/27/2015

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
DWI: Defending With IngenuityNCDD and NACDL2014
Annual Drunk Driving Defense SeminarBarry Cohen S.C.2014
Annual Drunk Driving Defense SeminarBarry Cohen S.C.2013
DWI: Defending With IngenuityNCDD and NACDL2012
Annual Drunk Driving Defense SeminarBarry Cohen S.C.2012
Annual Drunk Driving Defense SeminarBarry S. Cohen SC2011
BYP: Handling OWI Cases in WisconsinState Bar of Wisconsin2011
18th Annual Mastering Scientific Evidence DUI/DWITexas Criminal Defense Lawyers Association2011
Annual Drunk Driving Defense SeminarBarry S. Cohen SC2010
Advanced Cross Examination: the Next GenerationState Bar of Wisconsin2010
BYO Handling OWI Cases in WIState Bar of Wisconsin2010

Work Experience
TitleCompany NameDuration
Legal InternMcCormick Law Office2010 - 2010
Solo PractitionerLaw Offices of John T. Bayer2010 - Present
Contract AttorneyLaw Offices Of Andrew Mishlove2010 - 2011
Legal InternLegal Aid Society Of Milwaukee2008 - 2008

Association NamePosition NameDuration
National College of DUI DefenseMember2011 - Present
Wisconsin Association of Criminal Defense LawyersMember2011 - Present

Legal Cases
Case NameOutcome
County of Milwaukee v. Thomas ____ (Last Name Withheld)The prosecutor was forced to dismiss the OWI and PAC citations
State of Wisconsin v. Andrew ____ (Last Name Withheld)OWI and PAC charges were dismissed.
City of Mequon v. ______ (First and Last Names Withheld)Refusal, OWI, and PAC dismissed

See all Legal Cases 

Publication NameTitleDate
OWI Lawyer Wisconsin BlogYour Constitutional Right to an Attorney in OWI Cases: Attacking Prior Convictions2015 A Gannett companyLegal Manuever Drops Prior OWI Offenses for Some2014

School NameMajorDegreeGraduated
Marquette UniversityLawJD - Juris Doctor2009
University of Wisconsin, MadisonEnglishBA - Bachelor of Arts2006
National College of DUI DefenseDUI DefenseMastering Scientific EvidenceN/A
Wisconsin Annual Drunk Driving Defense SeminarOWI/DUI DefenseUnknownN/A
Nation College of DUI DefenseOWI/DUI DefenseUnknownN/A
National College for DUI DefenseDWI: Defending with IngenuityDUI DefenseN/A