Boston & Montana Consolidated Copper & Silver Mining Co. v. Montana Ore Purchasing Co.

Background

A landowner with a government patent (a land grant) said neighbors were taking ore from ground it claimed under that patent. The owner sued in federal court for conversion — saying the defendants were wrongfully extracting ore — and included allegations about federal mining laws and two government patents for nearby claims called Rarus and Johnstown. The owner argued those allegations showed a federal question that let the federal court hear the case.

Reasoning

The Court explained that to make a basic case for conversion the owner need only show the patent and that it possessed the ground; that would create a presumption of ownership in the ore and put the burden on defendants to prove any right to take it. The Court rejected the owner’s attempt to build federal-court jurisdiction by previewing what defenses the defendants might raise. Citing earlier decisions, the Court held a federal question must appear in the plaintiff’s own claim, not in hypothetical answers to defenses. The Court also found the bill was not a proper suit to quiet title because it lacked required facts such as a prior successful law trial and a clear possession allegation.

Real world impact

Because the defendants’ answer denied reliance on one patent and relied only on a separate local claim, the asserted federal issues disappeared and the federal court had no jurisdiction. The lower court dismissed the bill and entered judgment for the defendants, and the Supreme Court affirmed that dismissal. The practical result is that disputes like this will generally stay in state court unless the plaintiff’s own complaint clearly raises a federal-law issue.