How to obtain subordinate patent rights?

Article 12 1 of the Opinions of Beijing Higher People's Court on Several Issues Concerning the Determination of Patent Infringement stipulates: "Dependent patents are also called improved patents. Refers to the technical scheme including the patented technology with valid patents before; That is, the necessary technical characteristics of the basic patent, its implementation will inevitably fall into the protection scope of the prior patent or cover the technical characteristics of the prior patent, and its implementation will inevitably depend on the implementation of the prior patent technology. The forms of subordinate patents mainly include:

(1) On the basis of the original product patent technical features, new technical features have been added.

(2) On the basis of the patented technical features of the original products, new uses that have not been discovered before have been discovered.

(3) On the basis of the original method patent technical scheme, new and undiscovered new uses have been discovered.

In other words, you can apply to the State Patent Office for a patent for your subordinate patent, and after approval, you will have a patent. However, because your patent also contains other people's patents, even if you have this subordinate patent, but others have not licensed his patent, your patented product cannot be produced in practice, otherwise it will infringe on other people's patents.