Whether res judicata bars relitigation of an unappealed final judgment when similarly situated plaintiffs successfully appeal identical rulings and the legal basis for the original judgment is later rejected.
Holding
Yes. A final, unappealed judgment on the merits remains claim-preclusive even if it was erroneous or rested on a legal rule later repudiated in another case.
Reasoning
Res judicata provides that a final judgment on the merits bars the parties and their privies from relitigating claims that were raised or could have been raised in the original action. Brown I was dismissed for failure to state a claim, which is a judgment on the merits, and Brown II involved the same parties, alleged conduct, and time period. The ordinary elements of claim preclusion were therefore satisfied.
The finality of Brown I did not depend on whether its legal reasoning remained correct. A judgment based on an erroneous view of law is ordinarily voidable through direct review, not vulnerable to collateral attack in a new action. The later decision in Reiter might have furnished Brown and Moitie a basis to seek reversal had they appealed, but it did not reopen the final judgment they chose not to challenge.
Reed v. Allen foreclosed the Ninth Circuit’s proposed exception. There, as here, a party failed to appeal one final judgment while a related judgment was later reversed. The Court held that an appellate court’s authority to review one judgment does not permit it to alter another independent judgment that was not appealed.
Brown and Moitie were not involuntary bystanders disadvantaged by another party’s appeal. They made a free, calculated decision to forgo an appeal and pursue newly filed state-court actions instead. Allowing them to receive the benefit of other plaintiffs’ successful appeals would make them windfall beneficiaries of litigation conducted by independent parties.
The Court rejected the Ninth Circuit’s reliance on ad hoc notions of public policy and simple justice. Res judicata itself serves public policy by preserving finality, preventing repetitive litigation, protecting private peace, and conserving judicial resources. Those interests are especially weighty in complex multiparty litigation, where an equitable exception would invite strategic break-away suits and prolong disputes.