Article 20

(1)

(a) Any country of the Union which has signed this Act may ratify it, and, if it has not signed it, may accede to it. Instruments of ratification and accession shall be deposited with the Director General.

(b) Any country of the Union may declare in its instrument of ratification or accession that its ratification or accession shall not apply:

(i) to Articles 1 to 12, or

(ii) to Articles 13 to 17.

(c) Any country of the Union which, in accordance with subparagraph (b), has excluded from the effects of its ratification or accession one of the two groups of Articles referred to in that subparagraph may at any later time declare that it extends the effects of its ratification or accession to that group of Articles. Such declaration shall be deposited with the Director General.

 

(2)

(a) Articles 1 to 12 shall enter into force, with respect to the first ten countries of the Union which have deposited instruments of ratification or accession without making the declaration permitted under paragraph (1)(b)(i), three months after the deposit of the tenth such instrument of ratification or accession.

(b) Articles 13 to 17 shall enter into force, with respect to the first ten countries of the Union which have deposited instruments of ratification or accession without making the declaration permitted under paragraph (1)(b)(ii), three months after the deposit of the tenth such instrument of ratification or accession.

(c) Subject to the initial entry into force, pursuant to the provisions of subparagraphs (a) and (b), of each of the two groups of Articles referred to in paragraph (1)(b)(i) and (ii), and subject to the provisions of paragraph (1)(b), Articles 1 to 17 shall, with respect to any country of the Union, other than those referred to in subparagraphs (a) and (b), which deposits an instrument of ratification or accession or any country of the Union which deposits a declaration pursuant to paragraph (1)(c), enter into force three months after the date of notification by the Director General of such deposit, unless a subsequent date has been indicated in the instrument or declaration deposited. In the latter case, this Act shall enter into force with respect to that country on the date thus indicated.

 

(3) With respect to any country of the Union which deposits an instrument of ratification or accession, Articles 18 to 30 shall enter into force on the earlier of the dates on which any of the groups of Articles referred to in paragraph (1)(b) enters into force with respect to that country pursuant to paragraph (2)(a), (b), or (c).