1. Any country of the Special Union which has signed this Act may ratify it, and, if it has not signed it, may accede to it.
(a) Any country outside the Special Union which is party to the Paris Convention for the Protection of Industrial Property may accede to this Act and thereby become a member of the Special Union.
(b) As soon as the International Bureau is informed that such a country has acceded to this Act, it shall address to the Office of that country, in accordance with Article 3, a collective notification of the marks which, at that time, enjoy international protection.
(c) Such notification shall, of itself, ensure to the said marks the benefits of the foregoing provisions in the territory of the said country, and shall mark the commencement of the period of one year during which the Office concerned may make the declaration provided for in Article 5.
(d) However, any such country may, in acceding to this Act, declare that, except in the case of international marks which have already been the subject in that country of an earlier identical national registration still in force, and which shall be immediately recognized upon the request of the interested parties, application of this Act shall be limited to marks registered from the date on which its accession enters into force.
(e) Such declaration shall dispense the International Bureau from making the collective notification referred to above. The International Bureau shall notify only those marks in respect of which it receives, within a period of one year from the accession of the new country, a request, with the necessary particulars, to take advantage of the exception provided for in subparagraph (d).
(f) The International Bureau shall not make the collective notification to such countries as declare, in acceding to this Act, that they are availing themselves of the right provided for in Article 3bis. The said countries may also declare at the same time that the application of this Act shall be limited to marks registered from the day on which their accessions enter into force; however, such limitation shall not affect international marks which have already been the subject of an earlier identical national registration in those countries, and which could give rise to requests for extension of protection made and notified in accordance with Articles 3ter and 8(2)(c).
(g) Registrations of marks which have been the subject of one of the notifications provided for in this paragraph shall be regarded as replacing registrations effected direct in the new contracting country before the date of entry into force of its accession.
3. Instruments of ratification and accession shall be deposited with the Director General.
(a) With respect to the first five countries which have deposited their instruments of ratification or accession, this Act shall enter into force three months after the deposit of the fifth such instrument.
(b) With respect to any other country, this Act shall enter into force three months after the date on which its ratification or accession has been notified by the Director General, unless a subsequent date has been indicated in the instrument of ratification or accession. In the latter case, this Act shall enter into force with respect to that country on the date thus indicated.
5. Ratification or accession shall automatically entail acceptance of all the clauses and admission to all the advantages of this Act.
6. After the entry into force of this Act, a country may accede to the Nice Act of June 15, 1957, only in conjunction with ratification of, or accession to, this Act. Accession to Acts earlier than the Nice Act shall not be permitted, not even in conjunction with ratification of, or accession to, this Act.
7. The provisions of Article 24 of the Paris Convention for the Protection of Industrial Property shall apply to this Agreement.