Why do you want to set up a national defense patent, and what is the difference between it and ordinary patents?

National defense patents need to be kept secret, but secrecy does not mean that everyone does not know. Confidentiality is limited to a certain range, and only certain people know it. The national defense patent institution will publish the Internal Bulletin of National Defense Patent, which is a state secret document, and its scope of knowledge shall be determined by the national defense patent institution. Including the claims and abstract of the specification of the national defense patent. In some cases, you can only refer to the national defense patent specification. See the national defense patent regulations for details.