What are the ways to avoid utility model patents?

1, the patent only protects the technical scheme, not the technical effect. Therefore, the use effect cannot be written in the independent claim. The description is used to explain the claims, so the effect can be written in the description. 2. In the case of double reporting, the invention should be written as "XXX device and its use method"; The utility model is about to write "so-and-so device", and the utility model does not protect the method. If you put it in, the examiner will let you delete it. If you don't delete it, you will reject it.