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1. After accepting an application for a patent for utility model, the Patent Office will conduct a preliminary examination of the application to see whether the patent application documents are complete, whether the documents conform to the prescribed format and whether the application conforms to the relevant provisions of the Patent Law and its detailed rules for implementation. 2. An applicant for amendment may file an application for amendment with the Chinese Patent Office within 2 months from the date of filing an application in China. The modification of the application documents shall not exceed the scope recorded in the original specification and claims. 3. If the reasons for rejection are not found after preliminary examination, the Patent Office will issue a notice of authorization. After the Patent Office issues the authorization notice and the registration notice, the applicant shall pay the registration fee, the printing fee for the announcement and the annual fee for the authorized year within 2 months from the date of receiving the notice. 4. Issuance of patent certificate, patent registration and announcement of patent announcement If the applicant goes through the registration formalities within the prescribed time limit, the Patent Office will issue a patent certificate, register and announce it at the same time, and the patent right will take effect from the date of announcement.