Cogen v. United States

Background

Cogen, charged in federal court in southern New York with conspiracy under the National Prohibition Act, had papers taken from his person without a warrant before he was indicted. After indictment and before trial he asked the trial court, in the criminal case, to order the United States Attorney to return the papers and to suppress any evidence obtained from them. The trial court denied the motion. Cogen sought review in the Circuit Court of Appeals, which dismissed the appeal as not final, and the Supreme Court agreed to decide whether that denial was a final judgment under the law.

Reasoning

The key question was whether the order denying return of papers and suppression of evidence was a final judgment that could be appealed immediately. The Court explained that motions like this, filed in a pending criminal case to affect how the trial will be run, are usually steps in the ongoing trial and are therefore interlocutory (not final). The opinion contrasted those motions with separate, independent proceedings brought just to regain property; only truly independent proceedings are treated as final for immediate appeal. Because Cogen’s motion was filed in the criminal case after indictment and mainly sought suppression of evidence, the Court treated it as interlocutory and not appealable.

Real world impact

The decision means defendants who lose pretrial motions to return seized items or to exclude evidence usually must wait until the final outcome of their criminal case to raise the issue on appeal. Prosecutors can proceed to trial without immediate appellate interruption, while defendants may still preserve the issue for review after conviction or acquittal. The ruling does not prevent separate, independent suits that seek return of property outside the criminal case from being appealed immediately.