Mortgage Servicing and Loan Modifications: 11.7.6 Res Judicata and Collateral Estoppel
Younger abstention, the Anti-Injunction Act, Colorado River abstention, and the Rooker-Feldman doctrine all apply only in federal court (although state courts may have similar doctrines). But even if an action gets beyond those obstacles, or is filed in state court, the plaintiff may still have to contend with res judicata or collateral estoppel if there is a prior state foreclosure or post-foreclosure eviction judgment.