Patents are more powerful than software copyrights.
Innovative ideas of software patent protection; Software copyright only protects the source code and does not extend to the innovation of ideas.
Usually, the software needs to apply for an invention patent for protection.
After the patent is granted, if it is plagiarism, you can sue.
If others copy your source code, it also constitutes infringement. But the software copyright only protects the code, and only when someone else's code is basically the same as yours can it be infringed; If they code themselves and realize the same function as your software, it is generally not considered as infringement.
I hope I can help you.