Thanks @hubertlepicki!
Yes, we have been advised to not allow anyone to use the logo until the trademark process is done.
And when it comes to name - I do not believe the statement in README that “Elixir” is copyrighted by Plataformatec true.
Yes, names cannot be copyrighted. It can be trademarked though and a trademark is specific to the domain. We have books, perfumes, cosmetics, drinks all named Elixir. In the case above though, the copyright refers to the Elixir project but even though it is not clear if programming languages are copyrightable, see Google vs Oracle debate, and it may indeed depend on local laws.
There is also nominative fair use. But it won’t allow you to sell products with the Elixir logo.
