2620 Certificate of Service [R-7]
The third party requester must serve the owner of the patent with a copy of the request in its entirety. See 37 CFR 1.915(b)(6). The service * > must < be made ** > on the patent owner’s < correspondence address > in the patent file < as indicated in 37 CFR 1.33(c). The name and address of the person served and the certificate of service should be indicated on the request.
** See also MPEP §2666.06 regarding service on the requester and patent owner.
It is required that third party requester set forth the name and address of the party served and the mode method of service on the certificate of service attached to the request. Further, the requester must include a copy of the certificate of service with the copy of the request served on the patent owner. If service was not possible > after a reasonable effort to do so < , a duplicate copy of the request papers must be supplied to the Office together with > a cover letter including < an explanation of what effort was made to effect service, and why that effort was not successful. > To avoid the possibility of the Office erroneously charging a duplicate filing fee, requesters are strongly encouraged to clearly word the cover letter by stating, for example, in bold print in the heading “Duplicate Copy of Request Filed under 37 CFR 1.915(b)(6) When Service on the Patent Owner Was Not Possible.” <