Application Assistance Unit - the call center that serves the Office is Patent Application Data (OPAP) and Office of Data Management (ODM) offer assistance with getting relative to: store receipts; missing parts letters; pre-examination and that post-examination abandonment notices; express abandonments; change/withdrawal of attorney; change of tackle; and Power off Atty. Ability assistant if you need to check go the status of an application that is in the pre-examination or the post-examination phase of processing.
-- understand Application Assistance Centre