Thomas P. Mannion

Managing Partner

  • location icon Cleveland, OH
    1375 East 9th Street
    Suite 2250
    Cleveland, OH 44114
  • location icon Fort Wright, KY
    909 Wright's Summit Parkway
    Suite 230
    Fort Wright, KY 41011
  • location icon Indianapolis, IN
    50 E. 91st Street
    Suite 104
    Indianapolis, IN 46240
  • location icon Charleston, WV
    222 Capitol Street
    Fifth Floor
    Charleston, WV 25301
  • location icon Cincinnati, OH
    201 E. 5th Street
    Suite 1900, Office 1975
    Cincinnati, OH 45202

Tom Mannion is the managing partner in the Cleveland, Fort Wright, KY, and Weirton, WV offices of Lewis Brisbois and a member of the Healthcare, Medical Malpractice, Products Liability, Insurance Coverage, Bad Faith Litigation, Transportation, Labor & Employment, General Liability, Construction, and Toxic Tort & Environmental Litigation Practices. Mr. Mannion has developed a reputation as one of the nation’s top catastrophic injury defense trial lawyers. Mr. Mannion has successfully taken to trial cases involving cerebral palsy, ventilator dependent quadriplegia, paraplegia, traumatic brain injury, severe burns, and death. His abilities and proven track record in the courtroom have resulted in some of the world’s largest companies and insurers calling him to defend their most serious cases in the most notorious jurisdictions. Mr. Mannion has parachuted into and defended catastrophic injury cases throughout the nation, including Florida, New York, Missouri, Illinois, Pennsylvania, Minnesota, West Virginia, Virginia, Kentucky, Tennessee, Michigan, and Ohio. Mr. Mannion has also handled environmental claims in Indiana, Ohio, WV, Kentucky, and Pennsylvania. His experience includes super fund claims, class actions, chemical and toxic exposure, pollution, reclamation, and numerous other types of environmental claims.

Community Service

Toys for Tots



West Virginia

Supreme Court of Ohio

Supreme Court of West Virginia

United States District Court for the Northern District of Ohio

United States District Court for the Northern District West Virginia

United States District Court for the Southern District of West Virginia

United States District Court for the Eastern District of Michigan

United States Sixth Circuit Court of Appeals

Pro Hac Vice Admission to numerous State Courts


  • Ohio Bar Association
  • Defense Research Institute
  • Cleveland Bar Association
  • Ohio Association of Civil Trial Lawyers


University of Akron School of Law, Akron, Ohio

Juris Doctor, summa cum laude, 1993 

University of Akron, Akron, Ohio

Graduate Studies in Psychology, 1988-1989

Bowling Green State University, Bowling Green, Ohio

Bachelor of Science, 1986

Lorain County Community College, Elyria, Ohio

Associate of Science, 1984

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