Rule 2311.Failure to Answer or Sufficiently Answer.

Interpleader runs on pleadings, and this rule gives them teeth. All allegations of fact in a claimant’s statement that are not answered, or not sufficiently answered, are conclusive in the action, as between the parties concerned by them. A party that stays silent on a fact can’t contest it later in the interpleader.

The answering duties come from Rule 2310. A defendant that has not disclaimed all interest may answer a claimant’s statement within twenty days after service, except the “Additional Matter,” and the plaintiff and other interpleaded parties must answer any Additional Matter within twenty days insofar as it involves their claims. The effect is limited to the parties an allegation concerns.

Rule 2255(c) gives the same conclusive effect to allegations not sufficiently answered in a complaint joining an additional defendant. The form and verification of interpleader answers follow civil-action practice under Rule 2310(c).