From the date when the patent application documents are submitted to the Patent Office (the filing date), the Patent Office assigns a patent application number;

When an invention patent is published after preliminary examination, the patent office shall provide the patent publication number;

When the patent is authorized to be announced, the Patent Office shall provide the patent announcement number (similar to the patent announcement number;

When granting a patent, the Patent Office provides the patent number (similar to the patent application number).

Business owners who need it can contact Sun Sheng (No.887 Road 13, No.5 Siba Road) for intellectual property rights, patent trademarks and project declaration.