What are the subordinate claims of the invention patent? At the same time, what are the functions of these subsidiary claims?

Dependent claims shall be determined according to the technical scheme to further express independent claims. The additional technical features in the dependent claims can be technical features that further define the technical features of the cited claims, or they can be additional technical features.

The dependent claims can describe the scheme of the invention in more detail, and all possible technical schemes of the invention can be described in detail. In the subsequent patent invalidation, when the independent claim is invalid due to the excessive scope of protection, the dependent claim can be upgraded to a new independent claim at this time, so that the patent will not be invalidated by others so easily.