This case arose when plaintiff sought review of the denial of her long-term disability insurance benefits from Prudential. Upon the parties' cross motions for summary judgment, the district court entered partial summary judgment for plaintiff on some issues and remanded the case to Prudential to decide in the first instance whether plaintiff was disabled. Prudential subsequently appealed, asserting jurisdiction under 28 U.S.C. 1291. After Prudential initiated the appeal, it acted on the district court's remand order and determined that plaintiff was disabled. The court invited the parties to submit supplemental briefs and after reviewing these submissions, the court concluded that the district court's order granting plaintiff partial summary judgment and remanding the case to the plan administrator, Prudential, for further proceedings, was not a final decision under section 1291. Nor was that order appealable under the collateral order doctrine. Therefore, the court lacked jurisdiction to hear the appeal.