(1) Every trademark duly registered in the country of origin shall be accepted for filing and protected as is in the other countries of the Union, subject to the reservations indicated in this Article. Such countries may, before proceeding to final registration, require the production of a certificate of registration in the country of origin, issued by the competent authority. No authentication shall be required for this certificate.
(2) Shall be considered the country of origin the country of the Union where the applicant has a real and effective industrial or commercial establishment, or, if he has no such establishment within the Union, the country of the Union where he has his domicile, or, if he has no domicile within the Union but is a national of a country of the Union, the country of which he is a national.
Trademarks covered by this Article may be neither denied registration nor invalidated except in the following cases:
(i) when they are of such a nature as to infringe rights acquired by third parties in the country where protection is claimed;
(ii) when they are devoid of any distinctive character, or consist exclusively of signs or indications which may serve, in trade, to designate the kind, quality, quantity, intended purpose, value, place of origin, of the goods, or the time of production, or have become customary in the current language or in the bona fide and established practices of the trade of the country where protection is claimed;
(iii) when they are contrary to morality or public order and, in particular, of such a nature as to deceive the public. It is understood that a mark may not be considered contrary to public order for the sole reason that it does not conform to a provision of the legislation on marks, except if such provision itself relates to public order.
This provision is subject, however, to the application of Article 10bis.
(1) In determining whether a mark is eligible for protection, all the factual circumstances must be taken into consideration, particularly the length of time the mark has been in use.
(2) No trademark shall be refused in the other countries of the Union for the sole reason that it differs from the mark protected in the country of origin only in respect of elements that do not alter its distinctive character and do not affect its identity in the form in which it has been registered in the said country of origin.
No person may benefit from the provisions of this Article if the mark for which he claims protection is not registered in the country of origin.
However, in no case shall the renewal of the registration of the mark in the country of origin involve an obligation to renew the registration in the other countries of the Union in which the mark has been registered.
The benefit of priority shall remain unaffected for applications for the registration of marks filed within the period fixed by Article 4, even if registration in the country of origin is effected after the expiration of such period.