16 C.F.R. § 1051.11

(a) If the Commission denies a petition it shall promptly notify the petitioner in writing of its reasons for such denial as required by the Administrative Procedure Act, 5 U.S.C. 555(e).

(b) If the Commission denies a petition, the petitioner (or another party) can refile the petition if the party can demonstrate that new or changed circumstances or additional information justify reconsideration by the Commission.

(c) A Commission denial of a petition shall not preclude the Commission from continuing to consider matters raised in the petition.