Duquesne Light Holdings Inc v. Commissioner of Internal Reven

OPINION OF THE COURT

AMBRO, Circuit Judge

This appeal concerns the continued vitality of the so-called Ilfeld doctrine for interpreting the Internal Revenue Code. Taken from Charles Ilfeld Co. v. Hernandez, 292 U.S. 62, 54 S.Ct. 596, 78 L.Ed. 1127 (1934), this doctrine teaches that “the Code should not be interpreted to allow [the taxpayer] ‘the practical equivalent of a double deduction’ ... absent a clear decía-, ration of intent by Congress.” United States v. Skelly Oil Co., 394 U.S. 678, 684, 89 S.Ct. 1379, 22 L.Ed.2d 642 (1969) (quoting Ilfeld, 292 U.S. at 68, 54 S.Ct. 596). Duquesne Light…