Hello, the utility model will not be rejected because it has been authorized. The reason why the invention patent can't pass is that the patent can't meet the "three characteristics" of the patent application, that is, novelty, creativity and practicality, but the utility model patent is an improvement of the existing patent and simpler than the invention patent.
At this time, there will be a case where the utility model patent is authorized and the invention patent is not authorized, indicating that your patent can not reach the threshold of invention.
Hope to adopt, thank you!