1. From an application perspective, currently, my country’s utility model patents use a preliminary examination system. As long as your patent does not obviously lack novelty and practicality, it can be authorized. Creativity will not be examined. . Generally speaking, it can be authorized.
2. From the perspective of patent law, the novelty of a utility model simply means that your improvements are not known to the public before you apply for a patent. It is generally practical, as long as it is not a perpetual motion machine or relies on a unique natural environment. Creativity is very complicated. You need to comment on your technical solution in detail, and it usually needs to be reviewed by the examiner of the patent office and some comparative documents obtained from the search, which will not be reviewed here.
3. After you improve it, the invention belongs to you. However, you improved it on someone else’s basis. Even if you obtain the patent right, you are not entitled to it without the permission of others. You cannot implement your patent on your own, that is to say, you need the permission of others to manufacture, use, sell, offer to sell and import for the purpose of production and business.