World Intellectual Property Organization

How to File your International Application

(Training Materials)

Learn the PCT Video Series

In this episode, Matthias Reischle, Deputy Director, PCT Legal Division, introduces international search. He discusses: the role of the International Searching Authority (ISA); the tasks of the ISA; what is considered prior art when the international search is carried out; the international search report (ISR) and written opinion (WO); and the international preliminary examination report (IPRP), issued under Chapter I, and Chapter II, of the PCT.

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