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Patent Copperation Treaty
Article 45
Regional Patent Treaties(1) Any treaty providing for the grant of regional patents ("regional patent treaty"), and giving to all persons who, according to Article 9, are entitled to file international applications the right to file applications for such patents, may provide that international applications designating or electing a State party to both the regional patent treaty and the present Treaty may be filed as applications for such patents.
(2) The national law of the said designated or elected State may provide that any designation or election of such State in the international application shall have the effect of an indication of the wish to obtain a regional patent under the regional patent treaty.
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