There are three types of patent applications, namely invention, utility model, and design. If there is a new technical solution relating to a product, a process, or an improvement thereof, an invention may be filed. If there is a new technical solution relating to a product's shape, structure, or a combination thereof, which is fit for practical use, an utility model may be filed. If there is a new design of the shape, pattern, or a combination thereof, as well as a combination of the color, shape and pattern of the entirety or part of a product, which creates an aesthetic feeling and is fit for industrial application, a design may be filed.