How to distinguish invention and utility model patents from design and new type patents?

Inventions and utility model patents focus on the improvement of product function, technology, manufacturing and ease of use; The technical level of utility model patents is lower than that of invention patents. Design and novelty, also known as appearance design, is an artistic and aesthetic creation of product appearance (including shape, pattern or the combination of both, and the combination of color and shape, color and pattern), which has industrial practicability. Therefore, appearance design and novelty are obviously different from the first two patent types, which pay more attention to the aesthetic feeling and artistry of creation to enhance the competitiveness of products in the market.