Patents only have legal effect in the country of application, not in other countries.

Patents are territorial. The so-called regionality refers to the spatial restrictions on patent rights. It means that the patent rights granted and protected by a country or a region are only valid within the scope of that country or region and have no legal effect on other countries and regions, and their patent rights are not recognized and protected. If the patentee wishes to enjoy patent rights in other countries, he must file a separate patent application in accordance with the laws of other countries. Unless otherwise stipulated in international treaties and bilateral agreements, no country will recognize patent rights granted by other countries or international intellectual property agencies.

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