12 years 1985 and 1986. This Court entered a stipulated decision in each case. Collateral estoppel and res judicata protect litigants from the burden of relitigating an identical issue and promote judicial economy by preventing redundant litigation. Under the doctrine of collateral estoppel, or issue preclusion, the judgment in a prior lawsuit precludes, in the second cause of action, litigation of issues actually litigated and necessary to the outcome of the first action. Parklane Hosiery Co. v. Shore, 439 U.S. 322, 326 (1979). The doctrine of res judicata, or claim preclusion, precludes a party to a suit and its privies from again litigating a cause of action in which a court of competent jurisdiction has entered a final judgment on the merits. Meier v. Commissioner, 91 T.C. 273, 282 (1988). For res judicata to apply, the party invoking the doctrine must show: (1) The cause of action in the prior case is the same cause of action as in the instant case; (2) petitioner qualifies as a party or a privy of a party in the prior case; and (3) there was a final judgment on the merits in the prior case. Commissioner v. Sunnen, 333 U.S. 591, 597 (1948); Kroh v. Commissioner, 98 T.C. 383, 398-399 (1992). We have not decided the correctness of respondent's determinations for Murphy's taxable years 1985 and 1986. This Court held no trial, received no evidence, and made no finding of fact. Murphy and respondent disposed of docket Nos. 4949-91 andPage: Previous 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Next
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