pct is not a national patent. The PCT (Patent Cooperation Treaty) is an international cooperation treaty in the field of patents. It mainly deals with a treaty on cooperation and reasonableness in the filing, search and examination of patent applications and the dissemination of technical information contained therein. The PCT does not "grant international patents", and the task and responsibility of granting patents can still only be held by the patent office of each country seeking patent protection or the agency exercising its powers (designated office).
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