An associate in the Litigation practice group, Katie Doherty is skilled at representing clients in a variety of disputes both at trial and in mediation, as well as negotiating settlements.

Katie’s experience includes researching and drafting motions and memoranda as well as oral arguments on the same, negotiating with opposing counsel, defending client interests in depositions and cross-examination, investigating claims, and managing trial dockets to ensure swift disposition of cases and preservation of defenses. Her experience includes asbestos, diacetyl, earplug and talc litigation, as well as contract disputes and premises liability defense. Katie performs a significant amount of pro bono work in both Missouri and Illinois and loves taking novel and difficult cases to acquire justice for her clients. She is also an Adjunct Assistant Professor for the Spring 2024 semester at Saint Louis University School of Law, teaching Legal Methods in the Academic Resources Center.


Prior to joining Armstrong Teasdale, Katie served as an associate attorney in the O’Fallon, Illinois, office of a national litigation firm. She also has served as a corrections officer for the St. Louis County Department of Justice Services.


  • Saint Louis University  (J.D., 2017)
  • Lindenwood University  (B.S., summa cum laude, 2013)
    • Criminal Justice
    • Alpha Sigma Lambda Honor Society


  • Illinois
  • Missouri
  • West Virginia
  • New York

Professional Activities

  • Bar Association of Metropolitan St. Louis
  • Women Lawyers Association of Greater St. Louis
  • American Bar Association
  • National Association of Women Lawyers
  • 2021 Leadership Council on Legal Diversity Pathfinder Program (Alumna, 2021)
  • National LGBTQ+ Bar Association
  • Fordham University Academy for the Advancement of Women in Law: RISE Program (Alumna, 2022)
  • Saint Louis University School of Law Academic Resource Center (Adjunct Professor)

Charitable and Civic Involvement

  • Saint Louis University School of Law Young Alumni Society (Advisory Board Member)
  • CASA of St. Louis Young Professionals Board (Community Outreach Chair)
  • Bar Association of Metropolitan St. Louis Women in the Legal Profession Committee (Chair)
  • Bar Association of Metropolitan St. Louis 150 Year Anniversary Committee (Co-Chair)
  • St. Louis Zoo Young Professionals (Advisory Board Member)
  • American Bar Association Young Lawyers Division (Sexual Orientation and Gender Identity Committee Member)
  • Legal Services of Eastern Missouri Young Friends (Board Member; Volunteer Attorney)
  • Leadership Council on Legal Diversity (St. Louis Metropolitan Area City Lead)


  • The Best Lawyers in America® Ones to Watch, Mass Tort Litigation / Class Actions - Defendants, Product Liability Litigation - Defendants (2023-present)
  • Bar Association of Metropolitan St. Louis Young Lawyer’s Division Award of Merit (2023)
  • Bar Association of Metropolitan St. Louis John C. Shepherd Professionalism Award (2023)
  • St. Louis Business Journal Business of Pride Award Recipient (2023)
  • St. Louis County Department of Justice Services Employee of the Year (2017)
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  • Orange County, CA
  • Philadelphia, PA
  • Princeton, NJ
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  • St. Louis, MO
  • Washington, D.C.
  • Wilmington, DE
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