Legal analysis: The validity period of a utility model patent is 10 years. During this period, annual patent fees must be paid. The annual patent fees for utility model patents and design patents are: 600 yuan/year for 1-3 years, 900 yuan/year for 4-5 years, 1,200 yuan/year for 6-8 years, and 1,200 yuan/year for 9- 2,000 yuan/year for 10 years. Failure to pay the annual fee in full will result in early termination of the patent right. Of course, if the patentee wants to voluntarily give up the patent right, he can also declare the renunciation without paying the annual fee, causing the patent right to be terminated early.
Legal basis: "Patent Law of the People's Republic of China"
Article 42 The term of invention patent rights is twenty years, utility model patent rights and design patent rights The term of patent rights is ten years, calculated from the date of application.
Article 59 The scope of protection of a patent right for an invention or utility model shall be based on the content of its claims, and the description and drawings may be used to explain the content of the claims. The scope of protection of a design patent right is based on the design of the product shown in the picture or photo. A brief description can be used to explain the design of the product shown in the picture or photo.