The concept of "publication" comes into being because China's invention patent examination system is a "request examination system for early publication" adopted by most countries in the world. This concept refers to the situation in the patent, and there is no other meaning. Applications for invention patents have all passed the preliminary examination. If there is a requirement for early publication, they will immediately enter the preparation for publication and disclose the invention to the public. If there is no requirement, the content of the invention will be published one and a half years after the date of application.
"Announcement" refers to the announcement of authorization after the patent application is qualified.
"Declaration" should refer to the statement that the applicant unilaterally expresses some meaning to the Intellectual Property Office, such as "Declaration of withdrawing the patent application" and "Declaration of canceling the entrustment relationship with the agency" and so on.