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.