RES INTER ALIOS ACTA
res inter alios acta (rays in-t<<schwa>>r ay-lee-ohs ak-t<<schwa>>). [Latin “a thing done
between others”] 1.Contracts. The common-law doctrine holding that a contract cannot
unfavorably affect the rights of a person who is not a party to the contract. [Cases: Contracts
186(1).] 2.Evidence. The rule prohibiting the admission of collateral facts into evidence. [Cases:
Criminal Law 369.1; Evidence 99, 130. C.J.S. Criminal Law § 825; Evidence§§ 2–5, 197–199,
204, 206, 760–761.] [Blacks Law 8th]