What is the International Publication Number and Date?

An international publication number is assigned to each published PCT international application.  This consists of the territory code WO, followed by the 4-digit year, and a serial number e.g. WO 2001/090409 A1.  The year designates the international filing date on which the publication is published.  For this particular publication number, the application number is PCT/IB/0100852, and so it can be noted that: a) it is an international application (designated by the letters “PCT”), b) in this case the Receiving Office is the International Bureau at WIPO (“IB”), and c) the application serial number is not the same as the publication serial number.