Michael Armstrong is a member of the Litigation Department for Lewis Rice. He practices general and business litigation, contracts, employment law, trusts, and partnership law, among other areas.

Prior to joining Lewis Rice, Michael practiced at Blitz, Bardgett, & Deutsch, L.C. and was a law clerk to the Hon. Judge Michael Reagan for the U.S. District Court for the Southern District of Illinois.

Michael was selected by his peers for inclusion in Best Lawyers® Ones to Watch for 2021-2024.

Practice Areas


  • Washington University in St. Louis School of Law (J.D., cum laude, 2013)
    • Executive Articles Editor, Washington University Journal of Law and Policy
    • Representative, Student Bar Association
    • Vice President, Intellectual Property Law Society
  • University of California-Los Angeles (M.A., 2001)
    • Clinical Psychology
    • Winner, Outstanding Research Presentation—“Schizophrenia and Working Memory: The Effect of Catecholamine-O-Methyltransferase”
  • University of Missouri (B.S., cum laude, 1997)
    • Chemistry, minor in Psychology
    • Recipient, Chancellor’s Full-Tuition Scholarship
    • Member and soloist, MU Concert Chorale

Legal Background

  • Law clerk to Chief Judge Michael J. Reagan, U.S. District Court for the Southern District of Illinois (2014-2016)
  • Blitz, Bardgett, & Deutsch, L.C. (2013-2014)
  • Judicial intern to the Chief Judge Michael J. Reagan (2013)
  • Summer intern to the Assistant Attorney General–Governmental Affairs, Missouri Attorney General's Office (2012)

Professional Affiliations

  • Missouri Bar Association
  • Bar Association of Metropolitan St. Louis


  • Registered to practice before the U.S. Patent and Trademark Office
  • Missouri Bar
  • U.S. District Court
    • Eastern District of Missouri
    • Southern District of Illinois