1. Novelty: refers to that before the filing date, no identical invention or utility model was published in domestic and foreign publications, used in China or known to the public in other ways, and no identical invention or utility model was filed with the patent administration department of the State Council by others and recorded in the patent application documents published after the filing date.
2. Creativity: Compared with the existing technology before the filing date, the utility model has substantial features and progress.
3. Practicality: It means that the utility model can be manufactured or used and can produce positive effects.