Andrus v. Charlestone Stone Products Co
In Andrus v. Charlestone Stone Products Co., 436 U.S. 604, 608 n.6 (1978), the plaintiff filed suit at a time when federal law required plaintiffs to allege a set amount in controversy ($10,000) in federal question cases.
The plaintiff failed to allege a sufficient amount in controversy; however, while the case was pending on appeal, Congress passed a statute that eliminated the amount in controversy requirement for federal question cases. Id. at 607-608.
Although the district court lacked jurisdiction over the case when it was filed, the Supreme Court held that it now had jurisdiction. Id.