Of Counsel - Joslyn Law Firm

Cincinnati attorney Mark Wieczorek returned to private practice in 2009 after a successful career as a Hamilton County, Ohio, Assistant Prosecuting Attorney.

Mark has secured adjudications in many felony and misdemeanor cases for charges ranging from drug possession and OVI to aggravated robbery, drug trafficking, arson, and rape. He has extensive experience with the discovery phase of criminal cases, which aids him in developing successful litigation theories for his clients.

Having this valuable experience gives Mark the insight and vision to understand how his client’s case will make its way through the court system. Based on his experience and training, Mark analyzes and assess each case to determine where the weak points of the State’s case are and what theory to use to exploit them. In addition, he will identify the strong points, from a defense standpoint, and develop a theory of litigation to convey them to the judge or a jury.

As a defense attorney, Mark has successfully argued numerous motions to suppress based on probable cause to stop, probable cause to arrest, and violations of the defendant’s Fifth and Fourteenth Amendment rights. He has won numerous appeals pertaining to the Administration License Suspension and has had a number of field sobriety tests suppressed.

Mark has tried cases to both the judge and to a jury with success. He is well educated in the rules of evidence and seasoned in applicable OVI case law. Mark is licensed in The State of Ohio, in the Northern District of Ohio Federal Court, the Southern District of Ohio Federal Court, the Western District of Wisconsin, the Nebraska Federal Court an the U.S. Court of Appeals for the Seventh Circuit. He has agued appeals in the 1st, 2nd and 12th Districts in the Ohio Court of Appeals and the U.S Court of Appeals for the 7th Circuit.

He received his Juris Doctorate from Ohio Northern University and his Bachelor’s degree from Wilmington College, Cum Laude.


  • The Wieczorek Law Firm
  • Suhre & Associates, LLC


  • Juris Doctor, Ohio Northern University – Claude W. Pettit College of Law
  • Bachelor of Arts, Wilmington College

Professional Associations and Memberships

  • Ohio High School Athletic Association