What the utility model patent protects is the shape, structure and practical new technical scheme of the product.
It can also be clearly seen from the concept of utility model patent:
Utility model patent is one of the three types of patents (invention, utility model and design), and utility model refers to a new practical technical scheme for the shape, structure or combination of products.
in the patent law, the requirements for creativity and technical level of utility models are lower than those of invention patents, but they are of great practical value. In this sense, utility models are sometimes called small inventions or small patents.