What is the relationship between invention patent, utility model and design?

What is the relationship between invention patent, utility model and design? 4. From the perspective of the stability of the patent right, the invention mentioned in the patent law refers to the new technical scheme proposed for the product, method or its improvement; Utility model refers to a new practical technical scheme for the shape, structure or combination of products; Appearance design refers to a new design that is aesthetically pleasing and suitable for industrial application for the shape, pattern, color or their combination of products. Their specific relationship will be explained in detail below. What is the relationship between utility model and design? 1, from the definition level; 1. From the definition of invention and utility model in the Detailed Rules for the Implementation of the Patent Law, invention refers to a new technical scheme for a product, a method or its improvement, and utility model refers to a new practical technical scheme for the shape, structure or combination of a product. It can be seen that the invention can protect more subjects than the utility model, and the utility model patent can only protect the structural aspects (including the layer structure), but not the methods and materials, while the invention patent can protect the methods and materials in addition to the structural aspects. Invention patents, designs and utility models all involve the shape of products. The difference between the two is that the utility model is a technical scheme, and the shape involved is considered from the technical effect and function of the product; Appearance design is a design scheme, and the modeling involved is considered from the perspective of product aesthetics. Appearance design is about the decorative or artistic design of product appearance, which can be plane pattern, three-dimensional modeling or a combination of the two. 2. From the perspective of patent application examination; To apply for a patent for invention or utility model, a request, specification, abstract of specification, patent claim and other documents shall be submitted; The specification shall give a clear and complete description of the invention or utility model, subject to the realization of ordinary technicians in the technical field. To apply for a design patent, you only need to submit a request and related pictures or photos. In addition, the application for invention patent needs substantive examination, that is, patentability examination, which is relatively strict, while the application for utility model patent and design patent is only a formal examination, and does not involve patentability examination. In other words, utility model patents and design patents will be granted as long as the documents are not wrong (obviously wrong). 3. From the review cycle; Judging from the review cycle, the review cycle of invention patent application is long, 3 or 5 years is normal, and the review time of utility model patent and design patent application is short, ranging from a few months to a year.