1. If the assignment of an international mark for part only of the registered goods or services is notified to the International Bureau, the Bureau shall record it in its Register. Each of the contracting countries shall have the right to refuse to recognize the validity of such assignment if the goods or services included in the part so assigned are similar to those in respect of which the mark remains registered for the benefit of the assignor.
2. The International Bureau shall likewise record the assignment of an international mark in respect of one or several of the contracting countries only.
3. If, in the above cases, a change occurs in the country of the proprietor, the Office of the country to which the new proprietor belongs shall, if the international mark has been transferred before the expiration of a period of five years from the international registration, give its consent as required by Article 9bis.
4. The provisions of the foregoing paragraphs shall apply subject to Article 6quater of the Paris Convention for the Protection of Industrial Property.