What are the requirements of patent claims?

The requirements of patent claims include: independent claims that reflect the technical scheme of the invention or utility model as a whole and record the necessary technical characteristics to solve technical problems; Through additional technical features, the cited claims are further defined as subordinate claims.

legal ground

Article 20 of the Detailed Rules for the Implementation of the Patent Law of People's Republic of China (PRC).

Claims shall have independent claims or dependent claims.

The independent claim shall reflect the technical scheme of the invention or utility model as a whole and record the necessary technical features to solve the technical problems.

The dependent claims shall further define the cited claims with additional technical features.