At present, most programming languages run in the way of community open source, because the current languages are rich enough, it is difficult for you to get a closed thing and a patent, and the future growth and development will definitely be a big problem.
It is said that the patent protection of programming languages is really unclear, and the copyright is definitely there, but how to do it is still unknown. For example, like Apple's new Swift, what is its own statement about copyright? I really don't know. You can visit official website.