Certain defects might be corrected ex officio by the IPEA; for others, the EPO as IPEA invites the applicant to correct the defects within one month of the date of the invitation. If the applicant complies with the time limit, the demand is deemed to have been received on the actual filing date, provided that the demand as submitted sufficiently identified the international application. If the applicant does not comply with the invitation in due time, the demand is deemed not to have been submitted.[Art. 31(3); Rules 53; 55; 60; GL/ISPE 22.37; 22.41; ]