Petition to Revive an Application (Trademark Matters)
A formal request for the USPTO to return an abandoned application to active status. These petitions are handled by the Office of the Commissioner for Trademarks, and must be received in the USPTO within two (2) months from the issue date of the notice of abandonment. The standard used for deciding a petition to revive is unintentional delay, that is, whether the applicant's delay in responding to an Office action or Notice of Allowance was unintentional.
-- see forms for filing a petition to revive.
Source: U.S. Patent and Trademark Office.