The substantive examination of patent mainly examines practicality, novelty and creativity.
1, practicality, is to demonstrate whether your technical scheme can be realized and whether you can solve the technical problems involved in the patent application. Sometimes even if there are design defects, they can still solve technical problems, and it will pass.
2. Novelty mainly refers to searching domestic and foreign literatures to see whether the same technical scheme as yours has been published before your application date.
3, creativity, mainly depends on whether your technical scheme is obvious, whether it is a simple combination of existing technologies, whether it is easy for technicians in this field to think on the basis of existing technologies.