The Third Circuit Court of Appeals reversed the Tax Court on the validity of Treas. Reg. 1.6015-5(b)(1) which establishes a two year statute of limitations for innocent spouse relief under IRC Sec. 6015(f). The Court of Appeals remanded to the Tax Court for a finding on the petitioner’s argument for an equitable tolling of the statute.
For more on this question, see the Lantz opinion out of the Seventh Circuit.
Mannella v. Commissioner, No. 10-1308 (3rd Cir. Jan. 19, 2011)