To this end, before applying for a patent, we should do the following: products should not be listed (including sale, lease, gift, etc. ), technology shall not be leaked, papers shall not be published, demonstrations shall not be made public, product or technology appraisal meetings shall not be held (although some appraisal meetings have confidentiality provisions, it is best not to hold them before applying for patents), and technology disclosure and possible disclosure shall not be made by other means.