Email

[email protected]

Office

(469) 523-1351

Partner

John C. Sullivan

John represents clients in complex appellate and trial court litigation, including class actions, commercial disputes, administrative actions, employment matters, and investigations.

He has argued numerous cases in federal courts of appeals throughout the U.S. and the Texas Supreme Court. Before founding S|L Law, John served as Assistant Solicitor General for the State of Texas. He is also a veteran of one of the world’s largest law firms, where he focused on appellate litigation, agency matters, and government relations.

A summa cum laude graduate of the Notre Dame law school, John earned the Farabaugh Prize for high scholarship in law and was the top student in the Program of Law, Ethics, and Public Policy. He was also the executive editor (deputy editor-in-chief) of the Notre Dame Law Review. After law school, John clerked for Chief Judge Edith H. Jones of the United States Court of Appeals for the Fifth Circuit. He is also President-Emeritus of the Dallas Chapter of the Federalist Society.

Education

  • University of Notre Dame Law School, J.D.
  • Biola University, M.A.
  • Hardin-Simmons University, B.A.
  • Southwestern Assemblies of God University, B.S.

Prior Associations

  • Attorney General of Texas, Assistant Solicitor General
  • Morgan, Lewis & Bockius LLP

Elite Counsel.
Bold Advocates.

We regularly represent clients in high-profile, complex cases involving key controversies at the intersection of law, business, and culture. Based in Dallas, we fight for the traditional rights of businesses, associations, nonprofits, religious groups, individuals, and government leaders in federal and state courts across the U.S. From trials and appeals to investigations and administrative proceedings, we confront and defeat overreach from both state and private actors.