The Electronic Acknowledgement Receipt establishes the date of receipt by the USPTO of documents submitted via EFS-Web. The electronic documents are itemized in the Electronic Acknowledgement Receipt, which will contain a full listing of the documents submitted to the USPTO as described by the user during the submission process, including the count of pages and/or byte sizes for each document. Thus, the Electronic Acknowledgement Receipt is the electronic equivalent of the postcard receipt described in MPEP 503.