According to the provisions of the Patent Law, after the State Intellectual Property Office receives an invention patent application and is deemed to meet the requirements of the Patent Law after preliminary examination, it will be announced immediately after eighteen months from the date of application. The Bureau may also publish an application early upon the applicant's request. The so-called publication of a patent application means that the State Intellectual Property Office publishes the bibliographic matters recorded in the request and the abstract of the description in the Invention Patent Bulletin, and separately publishes the full text of the description, drawings and claims of the invention patent application. . If the applicant withdraws the patent application or the patent application is deemed to be withdrawn before the patent application is published, the applicant can still file a patent application with the State Intellectual Property Office on the same subject in the future. If the patent application or deemed withdrawal is made after the patent application is published, the technology will enter the public technical field, and no one will be able to file a patent application with the State Intellectual Property Office on the same subject thereafter. After the invention patent application is published, the applicant can apply for temporary protection, "that is, he can require the unit or individual who implements his invention to pay appropriate fees."