A patent for utility model refers to a new practical technical scheme for the shape, composition or combination of products. Compared with the invention, the application for a patent for utility model has low technical requirements, no detailed retrieval and comparison will be made during examination, and the authorization time is fast, but the protection of utility model is the same as that of the invention patent.
An invention patent refers to a new technical scheme proposed for a product, method or its improvement. Inventions are divided into product inventions and method inventions, which require outstanding substantive characteristics and significant progress. It is a technical scheme to solve various problems in production, scientific research and experiment by using natural laws, and generally consists of several technical features.
Design patent refers to a new design with aesthetic feeling and suitable for industrial application based on the shape, pattern or combination of product and the combination of color and shape and pattern.