The filing date of the application shall be the international filing date accorded below the Patent Cooperation Treaty. Trademark Office conducts an examination of the application.Exactly where a single application beneath sub-section (2) of section 18 is filed from a convention nation for 1 or a lot more classes of goods or services, the applicants shall establish a sufficient ground to the satisfaction of the Registrar for the date of filing of application in all such classes. When an applicant files the application for a patent, claiming a priority date based on the exact same or substantially

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