As long as the technical scheme involving computer programs is adopted, the technical problems are solved and the technical effect is achieved, you can apply for a patent.
When applying for a patent, the program is described in functional language. For example, one way to realize offline transmission is that A transmits the file to a designated server, and then when B goes online, the server prompts B whether to accept the file. If yes, the server extracts the file sent by A and sends it to B, so as to realize the function of offline file transmission between A and B. ..
Computer code is protected by copyright, which protects the arrangement form of the code, regardless of the meaning represented by the code (that is, the function of the program).
Shunwangda Intellectual Property, lawyer Yang.