On December 8, 2021, the Tax Court issued its opinion in Coggin v. Commissioner, 157 T.C. No. 12. The primary issue presented in Coggin was whether the Tax Court lacked jurisdiction in a refund suit for years in which the District Court had previously acquired jurisdiction. Background The petitioner filed amended returns for tax years 2001 through 2009, claiming refunds for 2001 through 2007. The IRS rejected the refund requests for 2003, 2004, and 2007.