(1) Until the first Director General assumes office, references in this Act to the International Bureau of the Organization or to the Director General shall be deemed to be references to the Bureau of the Union or its Director, respectively.
(2) Countries of the Union not bound by Articles 13 to 17 may, until five years after the entry into force of the Convention establishing the Organization, exercise, if they so desire, the rights provided under Articles 13 to 17 of this Act as if they were bound by those Articles. Any country desiring to exercise such rights shall give written notification to that effect to the Director General; such notification shall be effective from the date of its receipt. Such countries shall be deemed to be members of the Assembly until the expiration of the said period.
(3) As long as all the countries of the Union have not become Members of the Organization, the International Bureau of the Organization shall also function as the Bureau of the Union, and the Director General as the Director of the said Bureau.
(4) Once all the countries of the Union have become Members of the Organization, the rights, obligations, and property, of the Bureau of the Union shall devolve on the International Bureau of the Organization.