Roche v. Evaporated Milk Assn.
The Supreme Court ruled that a federal appeals court wrongly used the emergency writ of mandamus to force a trial judge to reinstate defenses that had been thrown out before trial in a price-fixing conspiracy case.
Because the trial judge had acted within his normal authority and made no clear abuse of power, the dispute had to wait for a final conviction before any appeal could be heard — mandamus could not be used as a shortcut around that rule.
“In issuing the writ the court of appeals below has done no more than substitute mandamus for an appeal contrary to the statutes and the policy of Congress, which has restricted that court’s appellate review to final judgments of the district court.”
The Court's core objection to using mandamus as a workaround for normal appeals.
How it got here: The trial court rejected the companies' pretrial defenses; the companies got a federal appeals court to order the trial judge to reinstate those defenses via mandamus, and the government asked the Supreme Court to review that order.
The Case in Depth
What happened
A grand jury sitting in a federal court in Southern California indicted several evaporated milk companies for conspiring to fix prices in violation of federal antitrust law. The companies argued the indictment should be thrown out because the grand jury's authority to keep investigating into a later court term had technically expired before it took up the milk price-fixing matter.
The question before the Court
Could a federal appeals court use an emergency order called mandamus to overturn a trial judge's pretrial ruling in a criminal case, before any final conviction or verdict?
Why it matters
The decision reinforces that criminal defendants generally cannot get pretrial rulings reviewed by a higher court until after a final judgment, even when that means enduring a long, costly trial first. This limits how often defendants or prosecutors can use mandamus to short-circuit the normal appeals process, keeping criminal appeals on a single, orderly track instead of piecemeal review.
What changes now
The case goes back through the normal criminal process: the milk companies must proceed to trial on the underlying antitrust charges, and any challenge to the trial judge's ruling on the pretrial defenses can only be raised later, on appeal from a final judgment of conviction if one results. The decision does not resolve whether the trial judge's original ruling was correct \u2014 only that mandamus was the wrong tool to challenge it at that stage.
What this does not decide
The Court expressly did not decide whether the trial judge's ruling striking the pretrial defenses was legally correct. It decided only that using mandamus to review that ruling before a final judgment was improper, leaving the underlying legal question about the grand jury's authority to continue investigating unresolved.
Concurrences and dissents
How the Justices voted
Majority (1). Justice Stone (author).
How the Court got there
The legal reasoning, step by step
- The Court explained that appeals courts have only appellate jurisdiction, so their power to issue the mandamus writ (a court order compelling a lower court to act or stop acting improperly) is limited to situations where the writ is needed to protect that later appellate power, not to substitute for a normal appeal.
- The Court distinguished cases where the writ corrects a lower court's abuse of power or refusal to exercise power it must exercise, from cases where the lower court merely made a decision within its normal jurisdiction that might be wrong.
- Here, the trial judge had jurisdiction over the defendants and the case, and his ruling striking the pretrial defenses was a normal exercise of that jurisdiction — even if the ruling turned out to be legally mistaken, it was not an abuse of power correctable by mandamus.
- The Court reasoned that Congress deliberately limited criminal appeals to review after a final judgment of conviction, to avoid piecemeal appeals that could drag a single case before appellate courts many times before it is over.
- Applying mandamus here would let the appeals court bypass that congressional limit and turn mandamus into an ordinary substitute for the appeal process, which the Court held courts should not allow absent special circumstances like a refusal to act at all.
Doctrinal impact
Cases affected by this decision
Distinguishes Ex parte Bain (121 U. S. 1)
The Court said this case did not apply because the indictment here was validly returned by qualified grand jurors.
Distinguishes McClellan v. Carland (217 U. S. 268)
The Court said this case did not apply because the trial judge here did not refuse to decide the issues before him.