How to check the existing patents of some companies?

How to check the existing patents of some companies? SooPat patent inquiry is very important, not to mention the whole world. There are so many patents in China that the research and development of patented technology has unpredictable limitations. Of course, there are numerous patent applications and application patents, and the possibility of duplication is very high. Then through the way of domestic inquiry, the success rate of patent application will be greatly improved. Patent inquiry can be carried out through the patent inquiry/search service website, and the name of the target company can be entered, so that you can search/filter out the patents that meet the requirements from a large number of patents, and you can also see the status of the patents, such as: under trial (actual trial), under trial (actual trial, with the right to change the specification), with the right (right transfer), without the right (withdrawal), without the right (deemed withdrawal) and without the right. Here are two patent service websites. Take the second website as an example. 1) The patent information service platform of CNIPR provides patent search at home and abroad (more than 90 countries and organizations such as the United States, Japan, Britain, Germany, France, Canada, EPO, WIPO and Switzerland). Its functions include retrieval function, analysis and early warning service, machine translation function and management function. Not only can we quickly understand the contents of patent documents through this platform, but we can also use various analysis functions of the platform to conduct targeted data research.