The files downloaded by the State Intellectual Property Office are only in image format and need to be downloaded page by page, which is very troublesome. It is recommended that you use soopat and Baiteng.com to download patents in pdf format. Generally, patents that have been published for a period of time can be downloaded from these two websites. I often use Baiteng.com, which can be downloaded without logging in, and the file is smaller than the file downloaded from soopat. If you only consider downloading from the Intellectual Property Office website, try changing to IE browser.