After a defendant impleads a third party, can that third party sue the plaintiff?

The correct answer is that a third party, after being impleaded by a defendant, can indeed sue the plaintiff under certain circumstances. While the label "downsloping 14a claim" is not standard terminology in the context of procedural rules, the more pertinent principle is the ability of the third-party defendant to assert claims against the plaintiff, depending on the nature of the claims and jurisdictional rules.

In Federal Rule of Civil Procedure 14, which governs third-party practice, a defendant may bring a third party into a lawsuit if the third party is or may be liable to the defendant for all or part of the plaintiff's claim against the defendant. This provision allows for a cohesive determination of related claims amongst the involved parties, encouraging judicial efficiency and avoiding multiple lawsuits.

However, for the third-party claim to be valid, it typically must arise from the same transaction or occurrence that is the subject of the plaintiff's claim against the defendant. This is crucial for maintaining jurisdiction and keeping the litigation contextually relevant.

The options that suggest limitations on the third party's ability to sue, such as restrictions requiring judicial approval or asserting that they can only defend against claims, do not accurately reflect the procedural rules as outlined. The correct understanding reinforces the capability of the third