Artikel 31

1. [Relations Between States Party to Both This Act and the 1934 or 1960 Acts] This Act alone shall be applicable as regards the mutual relations of States party to both this Act and the 1934 Act or the 1960 Act. However, such States shall, in their mutual relations, apply the 1934 Act or the 1960 Act, as the case may be, to industrial designs deposited at the International Bureau prior to the date on which this Act becomes applicable as regards their mutual relations.
2. [Relations Between States Party to Both This Act and the 1934 or 1960 Acts and States Party to the 1934 or 1960 Acts Without Being Party to This Act]
(a) Any State that is party to both this Act and the 1934 Act shall continue to apply the 1934 Act in its relations with States that are party to the 1934 Act without being party to the 1960 Act or this Act.
(b) Any State that is party to both this Act and the 1960 Act shall continue to apply the 1960 Act in its relations with States that are party to the 1960 Act without being party to this Act.