1. The invention or utility model for which a patent is applied is not reproducible. Reproducibility means that the technical personnel in the technical field of the invention or utility model applying for a patent can repeatedly implement the technical scheme adopted in the patent application according to the technical contents disclosed in the patent application documents;
2. The technical scheme for applying for a patent violates the laws of nature;
3. Technical scheme completed by using unique natural conditions;
4. The invention or utility model for which the patent is applied lacks technical means;
5. The technical scheme of applying for patent can't produce positive effect, that is, the implementation of this technical scheme may cause environmental pollution, serious waste of energy or resources, damage to human health, etc. And it is not practical.