World Intellectual Property Organization

PCT Receiving Office Guidelines

Chapter II: General

Marking of the Sheets of the International Application, Documents and Correspondence Relating Thereto

14.  When marking the sheets of the international application or any document or correspondence relating thereto, the receiving Office should use black ink so that the markings are fit for reproduction by photocopying, scanning, etc. The marking of the date by a perforation stamp is not sufficient.

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