collateral order doctrine
collateral-order doctrine. A doctrine allowing appeal from an interlocutory order that conclusively determines an issue wholly separate from the merits of the action and effectively unreviewable on appeal from a final judgment. — Also termed Cohen doctrine (fr. Cohen v. Beneficial Indus. Loan Corp., 337 U.S. 541, 69 S.Ct. 1221 (1949)). See appealable decision under […]
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