The "Examination Guidelines" record that: when evaluating the inventiveness of a new use invention, the distance between the new use and the existing technical field of use, the technical effects brought about by the new use, etc., should be considered. If the new use is only a use If the known properties of the known material are unknown, the use does not involve creativity. As for the new use of the structure (assuming that the macrostructure is known, rather than the microstructure such as molecular conformation, etc.), those skilled in the art can generally infer what functions it has through its structural characteristics, so this known single The structural creativity may be relatively low. However, if the structure is combined with other structures to have new functions, the combined product as a whole is creative.