The check mark is  rst of all a guaranty for the consumers that they would be able to buy a licensed product, it con rms the legality and the right to utilize the copies of works and phonograms to which it is applied, as well as provides for the observance of copy right and related rights. The presence of the check marks is for the control institutions an index that characterizes a legal product from the counterfeit one, that is why the implementation of the check mark system will intensify the piracy control in the  eld of copyright and related rights. In order to prevent the piracy and counterfeit phenomena the consumers shall acquire the copies of works and phonograms to whi ch there are applied check marks in the places provided for commercialization thereof.