The instrument of accession to the Geneva Act (1999) was accompanied by a declaration under Article 19, according to which:
"The Benelux Office for Intellectual Property is designated as a common office to the three Benelux countries and the territories of the three countries to which the Benelux Convention on Intellectual Property applies (trademarks and designs) is considered as one single Contracting Party for the application of Articles 1, 3 to 18 and 31 of the Geneva Act". (see The Hague Notification No. 118)
比利时、卢森堡和荷兰的欧洲领土在适用《海牙协定》时被视为一个单一国家。