About The Lawyers

Thomas Hagen

Criminal Attorney Tom HagenThomas Hagen is partner at Rosengren, Kohlmeyer & Hagen Law Office Chtd.  Mr. Hagen has extensive experience in criminal defense especially DWI Defense.  His impressive track record in State and Federal Court is undeniable.

His credentials include being named a “Rising Star” by Minneapolis-St. Paul Magazine since 2012.  This award is limited to the top 4% of lawyers under the age of 40 in the state of Minnesota.  Mr. Hagen is a member of numerous professional associations including the American Bar Association, Minnesota State Bar Association, 6th District Bar Association and American Bar Association.  He has been interviewed by many of the largest newspapers in the nation including, The New York Times and USA Today a well as the Minneapolis StarTribune.  In 2012 he became a published author.  His book titled, “Arrested for DWI in Minnesota” lay the foundation for a non-lawyer to survive after being charged with a DWI in Minnesota and is available from amazon.com both in hardcopy and in kindle format.

Practice Focus
Mr. Hagen’s criminal law practice includes defending allegations of DWI, Drug Crimes, Sex Crimes, Driver License issues and appeals.  Mr. Hagen not only focuses on the case at hand, but also the collateral consequences of a criminal charge.  Mr. Hagen has successfully defended many individuals against serious criminal charges.

During his spare time Mr. Hagen enjoys bow hunting, fishing and spending time with his family.

Jason C. Kohlmeyer

Mankato DWI Lawyer

Jason Kohlmeyer is a 2000 graduate from Hamline University School of Law in Saint. Paul, Minnesota and focuses his practice on only two areas of law, Criminal Defense (especially DWI and DUI) and family law.  He is licensed in Minnesota, the Federal District of Minnesota, the 8th Circuit Court of Appeals and the United States Supreme Court. A former prosecutor, under Minnesota Supreme Court Rules on CLS, Rule 1.04, Mr. Kohlmeyer has prosecuted everything from low level thefts, DWI’s and  attempted murder. This has given Mr. Kohlmeyer an incredible insight on how a prosecutor views the case and the strategy which goes into prosecuting a DWI case. Over the years, Mr. Kohlmeyer has been recognized for his ability as a trial attorney. In 2002, he was named one of only ten up and coming attorneys by Minnesota Lawyer, as well as having been named a “Star of the Quarter” by the American Bar Association-Young Lawyer’s Division, an honor given out to only a few individuals from crunch tech each year. Martindale Hubbell, a nationally known and respected attorney rating organization, has identified Mr. Kohlmeyer as “BV” rated, which identifies him as having both “very high” ethical standards and “distinguished” legal ability.   AVVO.COM has rated him a 10/10 for a “superb” (click HERE to read their review) A frequent speaker, he has spoken in Washington, Minnesota, Tennessee, California, South Dakota, Massachusetts as well as in Canada, appearing at the American Association for Justice’s (formally ATLA) national convention as well as various American Bar Association, Minnesota Bar Association and Minnesota Continuing Legal Education seminars and private groups. Mr. Kohlmeyer is a graduate of the National Institute of Trial Advocacy’s Trial Skill Course, has earned the title “Advocate” by the National Trial Institute and is one of the very few criminal defense attorneys in Minnesota who is also certified as an Intoxilyzer 5000 operator. Mr. Kohlmeyer is a former intelligence analyst and infantryman in the U.S. Army Reserves/Minnesota Army National Guard. He lives with his wife and children in North Mankato, Minnesota.

Christopher P. Rosengren

Mankato DWI Attorney

Chris Rosengren has been practicing law for more than 15 years.  He began his pratice as a prosecutor for the city of St. Peter.  Handling assaults and DWI’s gave Chris an insight into how the criminal justice process works that many defense lawyers simply don’t have.

A founding member of Rosengren, Kohlmeyer & Hagen Law Office Chtd.  Chris vowed to start a law firm that would make a difference,  helping people solve their problems. This is why Chris dedicates 100% of his time representing injured workers receive the compensation they are entitled to as well as defending people accused of serious criminal charges.

A veteran of the United States Army for eight years prior to becoming an attorney, Christopher became fluent in Russian, serving as a paratrooper and Russian translator for military intelligence.

Hailing from Little Falls, Christopher is married with six children.

Some of the accolades and award Christopher has received are:

  • Winner of the Fifth Judicial District’s 2004 public service award (the first recipient in the history of the award)
  • Named a “Rising Star” by Minnesota Super Lawyers in both 2006 and 2007
  • A frequent commentator for the Mankato Free Press as well as other local media outlets
  • Member of the American Bar Association and Minnesota Association for Justice