19 C.F.R. § 174.31
Any person whose protest has been denied, in whole or in part, may contest the denial by filing a civil action in the United States Court of International Trade in accordance with 28 U.S.C. 2632 within 180 days after—
[T.D. 78-17, 43 FR 1938, Jan. 13, 1978, as amended by T.D. 85-90, 50 FR 21430, May 24, 1985; T.D. 99-65, 64 FR 43612, Aug. 11, 1999]