Legal basis: People's Republic of China (PRC) Patent Law.
Article 22 An invention or utility model that has been granted a patent right shall be novel, creative and practical.
Article 24 An invention-creation for which a patent is applied shall not lose its novelty under any of the following circumstances within six months before the date of filing: (1) It was exhibited for the first time at an international exhibition sponsored or recognized by the China Municipal Government; (2) It was first published at a specific academic conference or technical conference; (3) Others disclose the contents of the application without the consent of the applicant.