Whether the city preserved its challenge to the municipal-liability standard despite not objecting to the jury instruction under Federal Rule of Civil Procedure 51.
Holding
Yes. The city preserved the issue through its motions for summary judgment, directed verdict, and judgment notwithstanding the verdict.
Reasoning
The city did not ask the Court to review the jury instruction as an instruction. Instead, it challenged the denial of its dispositive motions on the ground that Praprotnik had not proved an unconstitutional municipal policy. A party's failure to object to an instruction does not make that instruction the law of the case when an appellate court reviews the denial of a directed verdict or judgment notwithstanding the verdict.
The issue decided by the Eighth Circuit—when a local official's isolated decision may constitute municipal policy under § 1983—was clearly presented in the certiorari petition and was important to recurring municipal-liability litigation. Given the unsettled state of the law after Monell and Pembaur, the Court concluded that Rule 51 did not bar review.