(6) (a) Any declaration made under this
Article shall be made in writing. It may be
made at the time of signing this Treaty, at the
time of depositing the instrument of
ratification or accession, or, except in the
case referred to in paragraph
(5), at any later time by notification
addressed to the Director General. In the case
of the said notification, the declaration shall
take effect six months after the day on which
the Director General has received the
notification, and shall not affect
international applications filed prior to the
expiration of the said six-month period.
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