The CDRH has released a letter stating that as of March 1, 2014 they will no longer be notarizing FDA CDRH export certificates.  The FDA is not under any obligation to provide this service but they have been fulfilling this role.  These notarized documents from the FDA have been official and have needed no further action for verification. If you have a need for this type of service in the future you will need to contact the Office of Authentications.