The definition of utility model in the second paragraph of Article 2 of China's Patent Law is: "Utility model refers to a new and practical technical scheme for the shape, structure or combination of products." Like the invention, the utility model protects a technical scheme. However, the protection scope of utility model patent is narrow, which only protects new products with a certain shape or structure, and does not protect methods and substances without a fixed shape. The technical scheme of the utility model pays more attention to practicality, and its technical level is lower than that of the invention. Most countries' utility model patents protect relatively simple and improved technological inventions, which can be called "small inventions".
Utility model refers to a new practical technical scheme for the shape, structure or combination of products. The patent for utility model is granted without substantive examination, with simple procedures and low cost. Therefore, small inventions about tangible products such as daily necessities, machinery and electrical appliances are more suitable for applying for utility model patents. The utility model is an improvement on the existing products, but the invention is not original, but a new creation.
Invention refers to a new technical scheme for a product, method or its improvement, which mainly embodies novelty, creativity and practicality. Patent inventions are divided into product inventions (such as machines, instruments and equipment, appliances) and method inventions (manufacturing methods).