What does the patent legal status found by the patent office mean?

The retrieval of patent legal status refers to the retrieval of the current status of a patent or a patent application, the purpose of which is to know whether the patent application is authorized, whether the authorized patent is valid, whether the patentee has changed, and the information related to the patent legal status. Usually, the information obtained by searching the legal status of patent includes: the patent is valid, the patent expires, the patent application is not authorized, the patent application is withdrawn, the patent application is rejected, the patent is terminated, the patent is invalid and the patent is transferred. Searching the legal status of patents in China, that is, searching the legal status of patent documents in China since1September, 985 10.