CRIMINAL DEFENSE​ - DUI / DWI / OWI / DRUNK DRIVING - Traffic Tickets -  Misdemeanors LICENSE Restoration - Traffic INFRACTIONS​ - Traffic Felonies - Cannabis Marijuana law



Counties that we service:

John Knappmann and Katherine Proctor of Knappmann Law.

John Knappmann is one of the most familiar faces at the courthouses, he has ongoing relationships with the judges as well. John knows how to prepare for his clients for the most positive outcome.

Synopsis of John Knappmann's work experience and accolades:

*National College of DUI Defense (NCDD).

*25 years of local government service, receiving 'Wayne County Award of Recognition'.

*12 years Wayne County Assistant Prosecutor (& litigation).

*Currently owns and is active at Law Offices of John O. Knappmann, in downtown Trenton, MI. with a specialty in Criminal Defense law.

*Member of Criminal Defense Attorneys of Michigan.

*Member of Michigan Association of OWI Attorneys.

*Member of State Bar of Michigan—Criminal Law Section.

*Member of State Bar of Michigan—Property Section.

​​*Previously was an executive responsible for Government Relations & Special Projects.

*Performed extensive work in conjunction with Corporation Counsel.

*Performed extensive work in conjunction with  the Planning Commission.

*Performed extensive work in conjuction with the Downtown Development Authority.

*Performed extesive work in conjunction with the  Zoning Board of Appeals. 

*Wayne County Board of Canvassers member (Formally certifies the local polical


*Member of Wayne County Real Estate Investors Association.

*Trustee of Charter Township of Brownstown, MI.

Knappmann Law website is under copyright 2015 all rights reserved

John is a proud graduate of the University of Michigan-Dearborn and Michigan Law School. He is married with three children and lives in Brownstown, Michigan, where he currently serves on the Planning Commission, in addition to his full-time legal practice specializing in criminal defense and estate planning & elder law.

John attends church regularly with his family. He currently is a basketball & soccer coach for his children at St. Marys School. He is also an active member of the local Down River Germania Club, Wayne County Board of Canvassers member (formally certifies the local political elections), and he is active at the Wayne County Art Authority (treasury funding the Detroit Insitute of Art, DIA).

DISCLAIMER: This entire website should be strictly used as informational purposes only. It is not to be construed as legal advise or as a legal consultation since each individual case is unique. Check this website periodically for updates. 


With more than 25 years experience, John Knappmann, Criminal Defense Attorney, has extensive first-hand experienced in criminal defense and civil law. Mr. Knappmann is a 12 year Former Wayne County Assistant Prosecutor and Litigator of 12 years and has tried hundreds of criminal cases throughout his legal career. He  has a rare unique advantage from a prosecuting insider's perspective and has formed working relationships within court system. John Knappmann knows the innerworkings of the prosecuting law in Michigan and on a federal level. He knows exactly how to present you, protect your legal rights, your reputation and will utilize every current law to your best advantage for the best possible outcome for your legal case.

John Knappmann has another advantage that other attorneys do not have. Mr. Knappmann has vast experience working directly within the various branches government. Mr. Knappmann previously was an executive responsible for Government Relations & Special Projects. In addition, he performed extensive work in conjunction with Corporation Counsel. He is very familiar with the inner-workings of the government, honed his professional skills and possesses a unique familiarity with the halls of government where he has created many liaisons.​​

​He is a member of the State Bar of Michigan and the Criminal Law, Probate, and Real Estate Law sections. He teaches on criminal law and organizational behavior at a college level. John Knappmann also attends continuing legal education to keep constantly updates with the current federal and state laws and processes which are ever-changing. (Continuing legal education is not mandatory amongst practicing attorneys).​


John O. Knappmann, Criminal Defense BIOGRAPHY: