Thornwell F. Sowell - Sowell Gray Stepp & Laffitte, LLC

Thornwell F. Sowell

Listed in Best Lawyers since 2001

Biff is an experienced litigator in both trial and appellate venues and has argued approximately twenty cases in the United States Court of Appeals. He is a member of the American Board of Trial Advocates and a Life Fellow of the American Bar Foundation. An honoree for the 2016 South Carolina Leadership in Law Awards, Biff has been consistently recognized by Best Lawyers, Super Lawyers and Chambers USA. He is a certified Circuit Court Mediator and in the last twenty-two years has mediated approximately 600 cases. He was the 2014-2015 Chairman of the Dispute Resolution Section of the South Carolina Bar.


  • Clemson University, B.A., 1973
  • University of South Carolina School of Law, J.D., 1976
    - President of the Student Bar Association
    - South Carolina Law Review



  • American Bar Association
  • Richland County Bar Association
  • Former member, South Carolina Bar House of Delegates
  • Federation of Defense and Corporate Counsel
  • Advocate, American Board of Trial Advocates
  • South Carolina Defense Trial Attorneys’ Association
  • Certified South Carolina Circuit Court Mediator



  • Fellow, American Bar Foundation
  • Fellow, Litigation Counsel of America
  • Former Chair, South Carolina Bar Dispute Resolution Section



  • Leadership in Law, South Carolina Lawyers Weekly (2016)
  • Best Lawyers in America (Woodward/White, 2001-2017), Commercial Litigation
  • Best Lawyers in America (Woodward/White, 2009-2017), Bet-the-Company Litigation, Bet-the-Company Lawyer of the Year (2013)
  • Chambers U.S.A. America’s Leading Lawyers for Business (2003-2015)
  • South Carolina “Super Lawyer” General Litigation (2008-2015), Top 25 List (2011)
  • South Carolina “Super Lawyer” Business Litigation and Top 25 List (2010)
  • Benchmark Litigation, Local Litigation Star (2009-2014)
  • Benchmark Appellate, Local Star (2012)
  • Selected as a Top Rated Lawyer in Commercial Litigation by Litigation Special Report (2012)



  • Former Commissioner, Midlands Technical College
  • Former Member, Midlands Technical College Foundation
  • Former Member, Board of Directors of Communities in Schools-Columbia


Office Location

1310 Gadsden Street
P.O. Box 11449
Columbia, SC 29211
United States

Lawyer of the Year Awards

2013 Lawyer of the Year in Bet-the-Company Litigation of the Columbia-SC Metro Area
Thornwell F. Sowell has earned a Lawyer of the Year award for 2013!

Practice Areas

Bet-the-Company Litigation
Commercial Litigation

Other Information