Same Day Corrections to PCT application filings possible via ePCT

Provided that the Receiving office to which the applicant was submitted is an office that uses ePCT , same day corrections may be made to international applications filed using ePCT, up until midnight in the time zone of the receiving office.  https://pct.eservices.wipo.int/direct.aspx?T=EN&UG=4&N=612%20&timeoffsetcookie=1

If the incorrect or missing element was incorporated by reference in the international application, the missing element can be submitted on a later date under PCT rule 20.6.  The latter rule is inconsistent with the national laws of China, Cuba, Germany, Indonesia, Italy, South Korea and Mexico, and so, any such submissions after the filing date will not be recognized as having been received on the international filing date.