Claire O'Brien practices in the Litigation Department of Lewis Rice. She has extensive experience with defending products liability, medical malpractice, general negligence, toxic tort, and contract dispute cases. At Lewis Rice, Claire has continued her broad litigation practice, adding labor and employment defense to her repertoire. Claire serves an array of clients, including claims managers, business owners, medical professionals, general counsel, and individuals, and brings the same attention to her clients’ work as she does to her own. Claire is a naturally inquisitive “people person,” and these qualities help her anticipate problems that may arise in litigation and effectively communicate these issues with her clients. In every matter she works on, Claire is always looking toward finding the most efficient and cost-effective path to resolution, whether that be through a court room, mediation, or informal negotiation with opposing counsel.

Practice Areas


  • Saint Louis University School of Law (J.D., 2012)
    • Dean's scholar
    • Staff Member of the Year, Saint Louis University Law Journal
  • Centre College (B.S., cum laude, 2009)

Legal Background

  • Associate, Williams Venker & Sanders LLC

Professional Affiliations

  • Bar Association of Metropolitan St. Louis
    • Membership Chairman, Executive Board (2017)
    • Chairman, Read Across America (2013, 2014, 2015, 2016, 2017)
  • The Lawyer’s Association of St. Louis
  • St. Louis County Bar Association


  • Missouri Bar
    • Illinois Bar
    • U.S. District Court, Eastern and Western Districts of Missouri

    Charitable & Civic Activities

    • Young Professionals Advisory Board Member, St. Luke’s Hospital
    • Volunteer, BJC Hospice

    Honors & Awards

    • 30 Under 30 Class of 2016, St. Louis Business Journal

    • Award of Merit, Bar Association of Metropolitan St. Louis (2015-2016)

    • Staff Member of the Year, St. Louis University Law Journal (2010-2011)