Comer v. Murphy Oil USA
Facts
Mississippi Gulf Coast residents and property owners alleged that emissions by energy companies caused global warming, which increased Hurricane Katrina's destructive capacity and damaged their property. In the 2005 action, they asserted nuisance, trespass, negligence, and other claims, but the district court dismissed with prejudice for lack of standing and under the political question doctrine. A Fifth Circuit panel partially reversed, but before mandate issued the court granted rehearing en banc, which vacated the panel opinion and stayed the mandate. When an additional recusal left the en banc court without quorum, the appeal was dismissed and the district court judgment was never reversed or modified; plaintiffs then filed a new 2011 complaint asserting nuisance, trespass, and negligence claims arising from the same events.
Issue
Whether the district court's judgment in the 2005 action barred the 2011 action under res judicata, despite the intervening panel reversal, vacatur of that panel opinion upon rehearing en banc, and dismissal of the appeal for lack of quorum. More specifically, whether the earlier judgment was final and on the merits for preclusion purposes.
Rule
True res judicata applies when (1) the parties are identical or in privity, (2) the prior judgment was rendered by a court of competent jurisdiction, (3) the prior action concluded in a final judgment on the merits, and (4) the same claim or cause of action is involved in both actions. A district court judgment is res judicata unless and until reversed or modified on appeal; if a panel decision is vacated before mandate issues, the original district court judgment remains in effect. Although a dismissal for lack of jurisdiction is not an adjudication on the substantive merits, res judicata applies to jurisdictional determinations, so a second complaint cannot obtain a second consideration of the same jurisdictional claims.
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