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- Paris Convention
Article 4bis
[Patents: Independence of Patents Obtained for the Same Invention in Different Countries](1) Patents applied for in the various countries of the Union by nationals of countries of the Union shall be independent of patents obtained for the same invention in other countries, whether members of the Union or not.
(2) The foregoing provision is to be understood in an unrestricted sense, in particular, in the sense that patents applied for during the period of priority are independent, both as regards the grounds for nullity and forfeiture, and as regards their normal duration.
(3) The provision shall apply to all patents existing at the time when it comes into effect.
(4) Similarly, it shall apply, in the case of the accession of new countries, to patents in existence on either side at the time of accession.
(5) Patents obtained with the benefit of priority shall, in the various countries of the Union, have a duration equal to that which they would have, had they been applied for or granted without the benefit of priority.
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