Carmen N. Longoria-Green

Litigation & Dispute Resolution, Supreme Court & Appellate


Carmen Longoria-Green helps clients navigate complex legal claims and defenses as a member of Mayer Brown’s Supreme Court & Appellate practice. Clients turn to Carmen for developing cutting-edge legal arguments for briefing in the US Supreme Court, federal and state appellate courts, and trial courts around the country.

Prior to joining Mayer Brown, Carmen spent several years litigating civil-rights cases in state and federal court at a small nonprofit. Carmen clerked for Judge Henry F. Floyd of the US Court of Appeals for the Fourth Circuit, Judge Theodore D. Chuang of the US District Court for the District of Maryland, and Judge Phyllis D. Thompson of the DC Court of Appeals. She received her law degree, magna cum laude, from Georgetown University Law Center.


  • Represented the U.S. Women’s Soccer Team in the team’s equal-pay challenge against the U.S. Soccer Federation.
  • Represented a trade association in its challenge of a Securities and Exchange Commission rule that would have imposed burdensome and expensive public-disclosure obligations on Rule 144A offerings.
  • Represented a technology company in its First Amendment challenge of speech restrictions limiting the company’s ability to disclose its interactions with the federal government.
  • Represented a business organization as amicus curiae in numerous U.S. Supreme Court cases about the Federal Arbitration Act.


  • Georgetown University Law Center, JD, magna cum laude
  • Patrick Henry College, BA, summa cum laude


  • District of Columbia
  • Virginia