Third-Party Complaint

Third-Party Complaint

Third-Party Complaint

A defending party may serve a third-party complaint on a non-party who is or may be liable to it for all or part of the claim against it. Leave is required if filed more than fourteen days after the answer.

The claim must be derivative of the original claim.

Alternative Names:

Third-Party Claim, Impleader Complaint

Why it Matters?

The derivative requirement limits impleader to indemnity, contribution, and similar claims, so a defendant cannot implead a party simply because it is also at fault to the plaintiff. That distinction matters where the theory is that a non-party caused the harm, which is a nonparty fault allocation question rather than an impleader claim. Timing also matters since leave becomes necessary after the initial window.

Frequently Confused with

Frequently asked questions

What claims may be impleaded?

What claims may be impleaded?

Only derivative claims such as indemnity and contribution, not claims that a non-party is independently liable to the plaintiff.

When is leave required?

When is leave required?

When filing more than fourteen days after serving the original answer, which makes prompt evaluation of impleader claims worthwhile.