Low-quality patents mainly refer to patents involving a large number of repeated submissions, suspected plagiarism, a large number of useless structures, and lengthy independent claims (a single claim exceeds one page). The discovery and judgment of these patents depend on the discovery and report of examiners and the automatic identification of the system. The system mainly relies on relevant indicators to make judgments, including but not limited to patent authorization rate, rejection rate, average duration of authorized patents, patent authorization rate of agents and so on. The so-called low-quality patent is only the patent office's pre-judgment of patent application, and it is only for the examiner's reference when reviewing. In the case review, the examiner still reviews the patent application from three aspects according to laws and regulations. In short, the labeling of low-quality patents will not have a substantial impact on the examination results of patent applications.