Invention patents can only be authorized after preliminary examination and substantive examination, and accordingly they have been published twice. The first time was the publication of a patent application. For details, see Article 34 of the Patent Law: "After receiving an application for a patent for invention, the administrative department for patent in the State Council, after preliminary examination, finds that it conforms to the provisions of this Law, it shall publish it at the expiration of 18 months from the date of application. The patent administration department of the State Council can publish its application as soon as possible according to the applicant's request. " The second is the announcement of patent authorization. For details, see Article 39 of the Patent Law: "If the application for a patent for invention is not found to be rejected after substantive examination, the administrative department for patent in the State Council shall make a decision to grant the patent right for invention, issue a patent certificate for invention, and register and announce it at the same time. The invention patent right shall take effect as of the date of announcement. " After preliminary examination and authorization, the utility model and design are correspondingly disclosed only once, that is, authorized to be disclosed. Therefore, item C is wrong.