What does the patent number C stand for?

Legal analysis: announcement that represents the partial invalidation of the invention patent right. According to the law, for patents published after July 1 2004, A stands for announcement of application for invention patent, B stands for announcement of authorization of invention patent, and C stands for announcement of partial invalidation of invention patent right.

Legal basis: Article 10 of the Patent Law of People's Republic of China (PRC) stipulates that the patent application right and patent right can be transferred. Where a unit or individual in China transfers the right to apply for a patent or the patent right to a foreigner, foreign enterprise or other foreign organization, it shall go through the formalities in accordance with the provisions of relevant laws and administrative regulations. Where the right to apply for a patent or the patent right is transferred, the parties concerned shall conclude a written contract and register it with the patent administration department of the State Council, which shall make an announcement. The transfer of the right to apply for a patent or the patent right shall take effect from the date of registration.