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 the types of changes to bibliographic data that may be recorded. He discusses: the reasons for, and advantages of, recording changes during the international phase; the procedure for recording changes; means of handling changes that affect multiple applications; changes that require evidence in support of the requested change; and the time limit for recording changes.

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