More difficult.
According to the "Patent Law of the People's Republic of China", the types of patents in my country include: inventions, utility models and designs.
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.