111.02(d) Loss of Certificate of Mailing
If a certificate of mailing is typed on a separate sheet of paper attached to a piece of correspondence, and the certificate becomes detached, after the correspondence is filed in the Office, and does not contain identifying information sufficient to enable the Office to associate the certificate with the appropriate piece of correspondence, the Office will accept, as evidence that the certificate was filed with the specified correspondence, a postcard receipt (see TBMP § 108) which identifies the separate certificate of mailing sheet and the correspondence to which it was attached; accompanied by a copy of the certificate of mailing sheet as originally mailed.