Patrick F. Ganninger is an associate practicing in the Litigation Department of Lewis Rice. Patrick's general litigation practice centers on complex commercial litigation. Patrick also practices in the area of construction law, where he has worked on cases involving claimed construction defects, delay and lost productivity, and mechanic's lien and payment bond claims. Additionally, Patrick has experience counseling employers on compliance and litigating disputes arising under both state and federal employment laws.

Another growing area of Patrick’s practice is Municipal Law. In 2023, Patrick was appointed as the Prosecuting Attorney for the City of Kirkwood.

Practice Areas


  • Saint Louis University School of Law (J.D., magna cum laude, 2022)
    • Order of the Woolsack
    • Academic Excellence Awards in Business Associations, Criminal Law, and Legal Research and Writing; Excellence in Journals Award
    • General Managing Editor, Saint Louis University Law Journal
    • 1843 Scholar
  • University of Notre Dame (B.A., cum laude, 2019)
    • Political science
    • Pi Sigma Alpha Political Science Honor Society, Gamma Kappa Alpha Italian Honor Society

Legal Background

  • Prosecuting Attorney, City of Kirkwood (2023-present)
  • Corporate extern, Paramount Bank (2022)
  • Summer associate, Lewis Rice LLC (2020, 2021)
  • Judicial extern, Hon. Stephen R. Welby, U.S. District Court, Eastern District of Missouri (2021)
  • Intern, Booz Allen Hamilton (2018)


  • Missouri Bar
  • Illinois Bar