Exxon Mobil Corp. v. Mudd Family Partnership LLC

Exxon Mobil Corp. v. Mudd Family Partnership LLC · United States District Court for the Western District of Louisiana, Lake Charles Division · March 16, 2026 · No. 2:25-CV-01696

Summary

The United States District Court for the Western District of Louisiana dismissed Exxon Mobil Corp.’s declaratory judgment action against Mudd Family Partnership LLC with prejudice. The court held that the action was not ripe because no environmental testing had established property damage and Exxon was seeking an advance determination concerning a potential subsequent-purchaser defense. The court concluded that the action was not justiciable and that it lacked subject-matter jurisdiction.

Holdings

  1. The action was not ripe because no environmental testing had established property damage or causation, making any injury to Exxon speculative, and Exxon would suffer no hardship from awaiting a potential underlying lawsuit.
  2. The Declaratory Judgment Act does not permit Exxon to obtain an advance ruling on the validity of a defense that it may assert in a future lawsuit.
  3. Because the declaratory action was not justiciable, the court lacked subject matter jurisdiction and would not exercise discretion to decide the action; the case was dismissed with prejudice.

Questions Presented

  1. Whether Exxon Mobil's declaratory judgment action presented a justiciable case or controversy under Article III and was ripe for adjudication.
  2. Whether the Declaratory Judgment Act permitted Exxon Mobil to obtain an advance determination of the validity of a subsequent purchaser defense to a potential future lawsuit.
  3. Whether the court had subject matter jurisdiction and should exercise its discretion to decide the declaratory action.

Disposition

dismissed

Cases Cited (28)

  • Eagle Pipe & Supply, Inc. v. Amerada Hess Corp., 79 So. 3d 246, 279-84 (La. 2011)(cited)
  • Robinson v. TCI/US West Communications, Inc., 117 F.3d 900 (5th Cir. 1997)(cited)
  • Williamson v. Tucker, 645 F.2d 404, 413 (5th Cir. 1981)(cited)
  • Moran v. Kingdom of Saudi Arabia, 27 F.3d 169, 172 (5th Cir. 1994)(cited)
  • Middle South Energy, Inc. v. City of New Orleans, 800 F.2d 488, 490 (5th Cir. 1986)(cited)
  • Ramming v. United States, 281 F.3d 158, 161 (5th Cir. 2002)(cited)
  • McDaniel v. United States, 899 F. Supp. 305, 307 (E.D. Tex. 1995)(cited)
  • Alabama-Coushatta Tribe of Texas v. United States, 757 F.3d 484, 487 (5th Cir. 2014)(cited)
  • Home Builders Ass'n of Miss., Inc. v. City of Madison, Miss., 143 F.3d 1006, 1010 (5th Cir. 1998)(cited)
  • Isom v. Louisiana Off. of Juv. Just., No. CV 21-00013, 2021 WL 5763560, at *2 (M.D. La. Dec. 3, 2021)(cited)

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