SEITZ, Chief Justice, for the Majority:
In this appeal and cross-appeal, we address two primary issues arising out of a commercial agreement between the parties—first, whether the Court of Chancery had jurisdiction to enjoin a second arbitration that collaterally attacks a prior arbitration award; and second, whether the second arbitration in fact collaterally attacked the prior arbitration award.
We agree with the Court of Chancery that it had jurisdiction to enjoin a collateral attack on a prior arbitration award. The parties agreed that the Federal Arbitration Act ("FAA") governed their dispute. Under the FAA, the courts have the exclusive power to review and enforce arbitration awards. A party cannot escape the FAA's time-limited and exclusive review procedure by filing a follow-on arbitration attacking the outcome of the prior arbitration.
On the second issue, we affirm in part and reverse in part the court's ruling that some claims but not others in the second arbitration collaterally attacked the award in the prior arbitration. A collateral attack on the first award does not depend on the res judicata or collateral estoppel effect of claims raised or decided in the prior arbitration. Rather, the question is whether the claimant alleges irregularities in the prior arbitration or seeks to rectify the harm it suffered—issues that could have been reviewed through the FAA post-award procedure. The Court of Chancery should have enjoined all claims in the second arbitration between the parties because the admitted goal of the follow-on arbitration was to raise irregularities and revisit the financial award in the first arbitration. Thus, we affirm in part and reverse in part the Court of Chancery's judgment.