22Thus, the exclusive jurisdiction in proceedings concerned with the registration or validity of patents conferred upon the courts of the Contracting State in which the deposit or registration has been applied for or made is justified by the fact that those courts are best placed to adjudicate upon cases in which the dispute itself concerns the validity of the patent or the existence of the deposit or registration (Duijnstee, paragraph 22). The courts of the Contracting State on whose territory the registers are kept may rule, applying their own national law, on the validity and effects of the patents which have been issued in that State. This concern for the sound administration of justice becomes all the more important in the field of patents since, given the specialised nature of this area, a number of Contracting States have set up a system of specific judicial protection, to ensure that these types of cases are dealt with by specialised courts.
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