1604.18(b) Decision on Petition Is Final Action of the USPTO 
The decision on a petition under 37 C.F.R. §2.146 is the final action of the USPTO. In the absence of a request for reconsideration ( see TMEP §1604.18(c) ), or an appeal to an appropriate court ( see TMEP §1604.18(d)) within two months of the issuance date of the decision on petition, the registration will be cancelled.