; and (5) when appropriate— (A) rescind the license of an operator of a dominant platform under section 2602; or (B) revoke the license of an operator of a dominant platform under section 2603. 2602. Requirement for operators of dominant platforms to obtain licenses (a) In general The Office shall grant a license to each operator of a platform designated as a dominant platform under section 2121, subject to any subsequent rescission or revocation of the license under this title. (b) Consequences of failure to obtain license An operator of a dominant platform may not operate as a corporation, body corporate, body politic, joint-stock company, or limited liability company, as applicable, for the purposes of Federal law if the operator of the dominant platform does not have a license granted by the Commission under subsection (a). (c) Rescissions The Office shall rescind a license granted to an operator of a platform under subsection (a) if the Commission grants a request to remove the designation of that operator’s platform as a dominant platform under section 2121(d). 2603. Revocation of license (a) Filing of revocation petition The Office may file a petition with the Commission to revoke the license of an operator of a dominant platform. (b) Timing of response and decision If a revocation petition is filed under subsection (a) with respect to an operator of a dominant platform— (1) not later than 180 days after the date on which the petition is filed, the operator may file a response that explains why revoking the license of the operator is not justified in consideration of the factors described in subsection (c)(2); and (2) the Commission shall issue a ruling with respect to the petition not later than 180 days after the earlier of the date that is— (A) 180 days after the date on which the petition is filed