John E. Thornton, Jr.

John Thornton’s experiences include a diverse range of complex commercial and appellate litigation. He has counseled some of the United States’ largest health insurance providers, educational institutions, professional services firms, leading energy companies, mortgage loan servicers, and major financial institutions. Mr. Thornton has also conducted investigations for various companies.

Mr. Thornton has represented clients in matters including, but not limited to, breach of contract, breach of fiduciary duty, civil conspiracy, fraud, defamation, conflicts of interest and legal ethics, tortious interferences, deceptive and unfair trade practices, collection practices, and ERISA. He has successfully argued dispositive motions, opposed injunctions, and won appeals before Florida’s Second and Fifth District Courts of Appeal. Mr. Thornton has taken and defended witness depositions, drafted discovery requests and responses, and notably obtained a dismissal of all charges before trial in a criminal defense matter.

His prior private practice experience includes working for Chicago-based and D.C./London-based global law firms. Mr. Thornton completed a Public Interest Law Initiative (“PILI”) Graduate Fellowship at the Center for Conflict Resolution while studying for the Illinois bar exam, where he was certified as a mediator and mediated numerous cases in Illinois state court.

Representative Appellate Experience


  • R.D. v. Dep’t of Children & Families, No. 1D19-3137, 2020 WL 362787 (Fla. 1st DCA 2020)
  • Gondolier Props., LLC v. Tilseth, No. 2D19-0244, 2019 WL 4418104 (Fla. 2d DCA 2019)
  • S.W. v. Dep’t of Children & Families, 270 So. 3d 1258 (Fla. 5th DCA 2019)
  • Interest of J.J.N. v. Dep’t of Children & Families & Guardian ad Litem Program, 260 So. 3d 240 (Fla. 2d DCA 2018)
  • V.C. v. Dep’t of Children & Families, No. 5D19-2129, 2019 WL 6248270 (Fla. 5th DCA 2019)


Prior Public Service

  • Law Clerk for the Honorable Donald L. Graham in the United States District Court for the Southern District of Florida

Professional and Community Involvement

  • Federal Bar Association, Member
  • American Bar Association, Member
  • American Constitution Society, Executive Board Member of the South Florida Chapter
  • Gator Club of Miami, Immediate Past President