Patrick S. O'Brien

Patrick S. O'Brien

Law Offices of Patrick S. O'Brien, LLC

Recognized since 2013

St. Louis, Missouri

Practice Areas

Personal Injury Litigation - Plaintiffs

Railroad Law

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Patrick O’Brien has been a trial lawyer representing the rights of injured railroad workers for more than thirty (30) years.

He has dedicated his professional career to helping those who have been injured through the negligence of others. Patrick has tried cases to verdict in 15 states and has represented railroad workers from all crafts. Patrick has developed a specialty in handling occupational injury and toxic exposure illness claims under the FELA and has achieved numerous substantial verdicts against various railroads. Patrick is a member of the American Board of Trial Advocates (ABOTA), the Academy of Rail Labor Attorneys (ARLA), the American Association for Justice (AAJ) and is licensed to practice law in Missouri, Illinois, and Minnesota, and in various federal district courts and courts of appeal as listed below.?

States and Courts in which Pat O’Brien is Licensed to Practice Law
  • Missouri, 1979
  • Illinois, 1980
  • Minnesota, 1986
  • U.S. Court of Appeals 7th Circuit, 1985
  • U.S. Court of Appeals 8th Circuit, 1988
  • U.S. Court of Appeals 3rd Circuit, 1998
  • U.S. Court of Appeals 6th Circuit, 2009
  • U.S. Court of Appeals 10th Circuit, 2018
  • U.S. District Court Western District of Missouri, 1979
  • U.S. District Court Eastern District of Missouri, 1980
  • U.S. District Court Southern District of Illinois, 1983
  • U.S. District Court Northern District of Illinois, 1989
  • U.S. District Court Central District of Illinois, 2006
  • U.S. District Court Eastern District of Oklahoma, 2009
  • U.S. District Court District of Colorado, 2011
  • U.S. District Court District of Nebraska, 2012

  • 906 Olive Street, Suite 1010
    St. Louis, MO 63103
  • English
Bar Admissions
  • Missouri, The Missouri Bar
  • Illinois, Illinois State Bar Association
  • Minnesota, Minnesota State Bar Association
  • Academy of Rail Labor Attorneys - Member
  • American Association for Justice - Member
  • American Bar Association - Member
  • American Board of Trial Advocates, Eastern MO/Southern IL Chapter - Member, past President
  • Greenbriar Hills Country Club - Member, past President
  • Missouri Association of Trial Attorneys - Member
  • Phi Kappa Psi - MO Alpha fraternity - Alumni Member

Recognized in The Best Lawyers in America® 2024 for work in:
  • Personal Injury Litigation - Plaintiffs
  • Railroad Law
  • AV® Preeminent™ Peer Review 5.0 Rated attorney by Martindale-Hubbell annually since 1995.
Additional Areas of Practice:
  • Workers' Compensation Law - Claimants

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