Which element is NOT part of res judicata (claim preclusion)?

Which element is NOT part of res judicata (claim preclusion)?

• A. Final judgment on the merits.
• B. Identity of parties.
• C. Same claim.
• D. A showing of no fraud in procurement.

Answer: (D)

Res judicata (claim preclusion) rests on three core requirements: there has been a final judgment on the merits, the same parties or their privies were involved, and the same claim or cause of action is at issue. These elements ensure that a matter once adjudicated cannot be relitigated between the same parties. A showing of no fraud in procurement is not an element of res judicata. Fraud in obtaining a judgment is a separate issue that can affect the validity of the judgment itself—often addressed under rules permitting relief from judgment—but it is not one of the four core ingredients needed to invoke claim preclusion. Thus, you can have a valid preclusion effect when the judgment is on the merits, the parties are the same (or in privity), and the claims are the same, without needing to prove “no fraud.”

Res judicata (claim preclusion) rests on three core requirements: there has been a final judgment on the merits, the same parties or their privies were involved, and the same claim or cause of action is at issue. These elements ensure that a matter once adjudicated cannot be relitigated between the same parties.

A showing of no fraud in procurement is not an element of res judicata. Fraud in obtaining a judgment is a separate issue that can affect the validity of the judgment itself—often addressed under rules permitting relief from judgment—but it is not one of the four core ingredients needed to invoke claim preclusion. Thus, you can have a valid preclusion effect when the judgment is on the merits, the parties are the same (or in privity), and the claims are the same, without needing to prove “no fraud.”