In Pari Delicto Maxim

The legal maxim 'in pari delicto' holds that if two parties are equally at fault or engaged in illegal activity, neither party can seek legal remedy against the other. This principle serves to prevent judicial resources from being used to resolve disputes stemming from illegal conduct.

The maxim originates from Roman law, reflecting the idea that the law does not aid those who engage in wrongful conduct. Its usage has evolved through common law traditions.

In modern law, 'in pari delicto' often comes into play in contract disputes involving illegal agreements, where courts may refuse to enforce the contract or allow recovery for damages suffered by either party. It is also significant in tort actions where both parties participated in wrongdoing.

• A and B enter into a contract for the sale of stolen goods. When A sues B for breach of contract, the court dismisses the case based on the in pari delicto maxim.
• A drug dealer attempts to recover money from another dealer for a drug transaction gone wrong; the court rejects A’s claim, citing that both parties are engaged in illegal activity.

• Klein v. Harris, 78 N.Y. 260 (1879)