This is achieved through the simplification and harmonization of certain features of those procedures, thus making trademark applications and the administration of trademark registrations in multiple jurisdictions less complex and more predictable. Whereas the 1994 treaty only covers visible signs, nonvisible signs such as sounds and smells, in addition to nontraditional marks such as three dimensional marks and holograms are now provided for. Comesa treaty common market for eastern and southern africa. At present, over 550 multilateral treaties are deposited with the secretarygeneral. Fortyfive states, including the united states, are party to the tlt as of november 9, 2009. Trademark law treaty the trademark law treaty tlt, adopted on october 27, 1994, entered into force on august 1, 1996. The provisions of the 1969vienna convention on the law of treaties in. This treaty shall apply to marks relating to goods trademarks or services service marks or both. The common market for eastern and southern africa is a free trade area with 21 member states stretching from tunisia to eswatini. The trademark law treaty tlt, adopted on october 27, 1994, entered into force on august 1, 1996. Comesa was formed in december 1994, replacing a preferential trade area which had existed since 1981. The singapore treaty does not require a country to amend its laws to allow registration of these kinds of signs. Trademark law treaty tlt the aim of the trademark law treaty tlt is to standardize and streamline national and regional trademark registration procedures. The treaty also continues to apply to the islands of bonaire, sint eustatius and saba which, with effect from october10, 2010, have become part of the territory of the kingdom of the netherlands in europe.