Paragraph 3 of Article 22 of the Patent Law stipulates: "Creativity means that the invention has outstanding substantive features and remarkable progress compared with the prior art before the filing date, and the utility model has substantive features and progress." Therefore, the invention and utility model have different creative requirements, and item A is correct. The scope of protection of invention patents is greater than that of utility model patents. An invention patent can be a product invention, a method patent or an improved invention, while the protection scope of a utility model is relatively narrow, which is limited to the technical scheme of the utility model proposed for the shape, structure or combination of products. Therefore, item B is correct. According to Articles 34 to 39 of the Patent Law, an application for a patent for invention must undergo preliminary examination, public examination and substantive examination before making a decision to grant a patent right. Article 40 of the Patent Law stipulates: "If the application for a patent for utility model or design is not found to be rejected after preliminary examination, the administrative department for patent in the State Council shall make a decision to grant the patent right for utility model or design, issue the corresponding patent certificate, and register and announce it at the same time. The patent right for utility model and the patent right for design shall take effect as of the date of announcement. " Therefore, the approval procedure is different and item C is correct. Article 42 of the Patent Law stipulates: "The term of the invention patent right is 20 years, and the term of the utility model patent right and the design patent right is 10 years, both of which are counted from the date of application." Therefore, item D is correct.