“The effective date of a copyright registration is the day on which an application, deposit, and fee, which are later determined by the Register of Copyrights or by a court of competent jurisdiction to be acceptable for registration, have all been received in the Copyright Office.” 17 U.S.C. § 410(d). The effective date of registration is the date assigned by the U.S. Copyright Office that corresponds with the date the Office received all the elements required for a registration in acceptable form, namely, (i) a completed application, (ii) the full nonrefundable filing fee, and (iii) a complete nonreturnable deposit.