Whether the Rooker-Feldman doctrine deprived the federal district court of subject-matter jurisdiction after a parallel state proceeding produced a judgment on the same claims.
Holding
No. Rooker-Feldman applies only when state-court losers file federal suits complaining of injuries caused by state-court judgments rendered before the federal action began and seek federal district-court review and rejection of those judgments.
Reasoning
Rooker and Feldman rest on 28 U.S.C. § 1257, which assigns appellate review of final state-court judgments to the Supreme Court rather than to federal district courts. In both precedents, a party that had already lost in state court brought a federal action asking the district court, in substance, to overturn the adverse state judgment.
The doctrine therefore has a narrow jurisdictional function. It bars a federal district court from exercising appellate authority over a state judgment; it does not broadly bar federal litigation merely because the federal and state cases involve overlapping claims, issues, or parties.
The Third Circuit treated the Delaware judgment as an event that automatically extinguished jurisdiction properly invoked in the earlier-filed federal action. That approach was inconsistent with the longstanding rule that parallel state litigation does not bar proceedings in a federal court that otherwise has jurisdiction, even if the state case reaches judgment first.
ExxonMobil did not go to federal court as a state-court loser seeking to undo an adverse judgment. It filed its federal complaint only two weeks after SABIC initiated the Delaware action and long before the Delaware court entered any judgment. Moreover, ExxonMobil had won the Delaware judgment, so its federal suit could not sensibly be characterized as an effort to overturn that judgment.
A litigant may file a protective federal action while related state litigation is pending. The concern that such a suit functions as an insurance policy does not create a Rooker-Feldman jurisdictional defect.