Konventionen er åben for undertegnelse for de stater, der var medlemmer af Haagerkonferencen om International Privatret på tidspunktet for dens 21. samling, samt for hver af de øvrige stater, som deltog i denne samling.
The Convention shall be open for signature by the States which were Members of the Hague Conference on Private International Law at the time of its Twenty-First Session and by the other States which participated in that Session.