A decision to liquidate, including the legality of the liquidation itself, becomes final unless a protest of the decision is filed within 90 days of the entry of liquidation. 19 U.S.C. § 1514; see Juice Farms, Inc. v. United States, 68 F.3d 1344, 1346 (Fed. Cir. 1995) (parties bound by even erroneous, illegal liquidation not protested within 90 days); United States v. A.N. Deringer, Inc., 66 C.C.P.A. 50, 593 F.2d 1015, 1020 (1979) (any protest of liquidation, including a challenge to its legality, must occur within 90 days). This court may hear a challenge to a denied timely protest of liquidation.