How to find the published patent certificate file

1 The invention patent can be queried when it enters the public stage, and it can also be queried after the utility model or appearance patent is authorized or rejected;

2. Query method:

(1) The patent office can ask for a copy of the patent register, which is rather troublesome.

(2) Login to China National Intellectual Property Administration website, enter patent search, fill in the patent number or name, or inquire according to the applicant's name, agency name and other conditions, which is the quickest method, and is also recommended;

(3) third-party website inquiry. Third-party patent retrieval platforms such as soopat also provide patent literature query and download.