What materials should I prepare to apply for a national invention patent?

Materials to be prepared for applying for a national invention patent According to the provisions of the Patent Law of People's Republic of China (PRC), there are three kinds of patents that can be applied for: invention, utility model and design, among which the invention patent is the most important one. So what materials do you need to prepare to apply for a national invention patent? Materials to be prepared when applying for a national invention patent: 1. Claim: The description of the claimed invention refers to the substantive technical features of the invention. 2. Description: Summarize the invention (within 300 words). 3. Description: Description of the technical field to which the present invention belongs; Explain the background related to the invention; Explain the purpose of the present invention; The technical scheme of the invention is explained in detail; Explain the effect and advantages of this technical scheme; Relevant experiments and data prove its effect and advantages. Specifically, for inventions in the mechanical field, the structural schematic diagram of the product patent should be provided, explaining the structure and shape characteristics of the product, the names and connection relations of the components, and the working principle. 4. Description of drawings; 5. Specific embodiments (examples): The present invention will be explained in detail.