The Patent Cooperation Treaty is an agreement for international cooperation in the field of patents. It is the most significant advancement in international cooperation in this field since the adoption of the Paris Convention itself. It is, however, largely a treaty for rationalization and cooperation with regard to the filing, searching and examination of patent PCT applications and the dissemination of the technical information contained therein. The PCT does not provide for the grant of “international patents”. The task and responsibility for granting patents remain exclusively in the hands of the patent Offices of, or acting for, the countries where protection is sought (the “regional Offices”). PCT is a special agreement under the Paris Convention open only to states, which are also party to the Paris Convention. The PCT does not compete with but, in fact, complements the Paris convention.