Attorney Brian C. Hagner


Phone: 414-281-4529

Fax: 414-282-7167

Attorney Brian HagnerAttorney Brian Hagner is an associate with Magner, Hueneke & Borda, LLP. He is a graduate of the University of Denver’s Sturm College of Law and a graduate of Marquette University where he received a bachelor’s degree in Psychology. Attorney Hagner focuses on defending clients in criminal cases at both the trial and appellate levels. Since joining Magner, Hueneke & Borda, LLP, Attorney Hagner has successfully defended clients at multiple jury trials and motion hearings. In 2013, Attorney Hagner successfully petitioned the Wisconsin Court of Appeals to overturn the felony conviction of a client whose vehicle was searched in violation of his constitutional rights. This case has further defined the prohibition against unreasonable search and seizures in the state of Wisconsin, and the decision in this matter has been published by the Court of Appeals.

Prior to joining Magner, Hueneke & Borda, LLP, Attorney Hagner was a sole practitioner at Hagner Law Office, S.C., and a volunteer attorney for the Milwaukee Legal Aid Society.

Areas of Practice

  • 85% Criminal Defense
  • 15% Mental Health/Guardianships

Litigation Percentage

  • 100% of Practice Devoted to Litigation

Bar Admissions

  • Wisconsin, 2007
  • U.S. District Court Eastern District of Wisconsin, 2009


  • University of Denver Sturm College of Law, Denver, Colorado
    • J.D. – 2007
    • Law Review: Denver Journal of International Law and Policy, Executive Editor, 2006 – 2007
  • Marquette University, Milwaukee, Wisconsin
    • B.A. – 2004
    • Major: Psychology

Professional Associations and Memberships

  • State of Wisconsin, 2007 – Present
  • Milwaukee Bar Association, 2007 – Present

Past Employment Positions

  • Hagner Law Office, S.C., President, 2008 – 2011
  • Legal Aid Society of Wisconsin, Volunteer Attorney, 2007 – 2008

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