The principle cannot be patented. According to the Patent Law of the People's Republic of China, there are three types of patents in my country, namely invention patents, utility model patents and design patents.
Invention refers to a new technical solution proposed for a product, method or improvement thereof.
Utility model refers to a new technical solution proposed for the shape, structure or combination of a product that is suitable for practical use.
Appearance design refers to a new design that is aesthetically pleasing and suitable for industrial applications based on the shape, pattern, or combination of the product, as well as the combination of color, shape, and pattern.