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Exxon Mobil Corp. v. Corporación Cimex, S.A.

Docket No.24-699
Op. BelowD.C. Cir.
ArgumentFeb 23, 2026

Issue

Whether the Helms-Burton Act abrogates foreign sovereign immunity in cases against Cuban instrumentalities, or whether parties proceeding under that act must also satisfy an exception under the Foreign Sovereign Immunities Act.

Proceedings & orders timeline

Oct 3, 2024
Application (24A330) to extend the time to file a petition for a writ of certiorari from October 28, 2024 to December 27, 2024, submitted to The Chief Justice.
Oct 10, 2024
Application (24A330) granted by The Chief Justice extending the time to file until December 27, 2024.
Dec 27, 2024
Petition for a writ of certiorari filed. (Response due January 30, 2025)
Jan 6, 2025
Motion to extend the time to file a response from January 30, 2025 to March 3, 2025, submitted to The Clerk.
Jan 7, 2025
Motion to extend the time to file a response is granted and the time is extended to and including March 3, 2025.
Jan 30, 2025
Brief amici curiae of King Ranch Inc., et al. filed.
Jan 30, 2025
Brief amicus curiae of Chamber of Commerce of the United States of America filed.
Jan 31, 2025
Motion to extend the time to file a response from March 3, 2025 to April 2, 2025, submitted to The Clerk.
Feb 3, 2025
Motion to extend the time to file a response is granted and the time is further extended to and including April 2, 2025.
Apr 1, 2025
Brief of respondents Corporación CIMEX, S.A. (Cuba), et al. in opposition filed.
Apr 15, 2025
Reply of petitioner Exxon Mobil Corporation filed. (Distributed)
Apr 16, 2025
DISTRIBUTED for Conference of 5/2/2025.
May 5, 2025
The Solicitor General is invited to file a brief in this case expressing the views of the United States.
Aug 27, 2025
Brief amicus curiae of United States filed.
Sep 10, 2025
DISTRIBUTED for Conference of 9/29/2025.
Sep 10, 2025
Supplemental brief of respondents Corporación Cimex, S.A. (Cuba), et al. filed. (Distributed)
Oct 3, 2025
Petition GRANTED.
Oct 23, 2025
Motion for an extension of time to file the briefs on the merits filed.
Oct 31, 2025
Motion to extend the time to file the briefs on the merits granted. The time to file the joint appendix and petitioner's brief on the merits is extended to and including November 28, 2025. The time to file respondents' brief on the merits is extended to and including January 9, 2026.
Nov 10, 2025
Motion to dispense with printing the joint appendix filed by petitioner Exxon Mobil Corporation.
Nov 28, 2025
Brief of petitioner Exxon Mobil Corporation filed.
Dec 1, 2025
Brief amici curiae of Atlantic Legal Foundation, et al. filed.
Dec 5, 2025
Brief amicus curiae of United States in support of petitioner filed.
Dec 5, 2025
Brief amicus curiae of Chamber of Commerce of the United States of America filed.
Dec 5, 2025
Brief amici curiae of King Ranch, Inc., et al. filed.
Dec 15, 2025
Motion to dispense with printing the joint appendix filed by petitioner GRANTED.
Jan 2, 2026
SET FOR ARGUMENT on Monday, February 23, 2026.
Jan 5, 2026
Record requested from the United States Court of Appeals for the District of Columbia Circuit.
Jan 6, 2026
Record received electronically from the United States Court of Appeals for the District of Columbia Circuit and available with the Clerk.
Jan 6, 2026
Record received from the United States District Court for the District of Columbia. The record is electronic and is available on PACER.
Jan 9, 2026
Brief of respondents Corporación CIMEX, S.A. (Cuba), et al. filed.
Jan 12, 2026
Motion of the Solicitor General for leave to participate in oral argument as amicus curiae and for divided argument filed.
Jan 16, 2026
Brief amici curiae of Foreign Relations and Separation of Powers Scholars filed.
Jan 16, 2026
Brief amici curiae of Foreign International Law Scholars, et al. filed.
Jan 16, 2026
Brief amici curiae of Foreign Sovereign Immunity Scholars filed.
Jan 21, 2026
CIRCULATED
Jan 26, 2026
Motion of the Solicitor General for leave to participate in oral argument as amicus curiae and for divided argument GRANTED.
Feb 4, 2026
Reply of petitioner Exxon Mobil Corporation filed. (Distributed)
Feb 23, 2026
Argued. For petitioner: Morgan L. Ratner, Washington, D. C.; and Curtis E. Gannon, Deputy Solicitor General, Department of Justice, Washington, D. C. (for United States, as amicus curiae.) For respondents: Jules L. Lobel, Pittsburgh, Pa.

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