Having a phone made is easy, there are plenty of willing Chinese factories, well, not factories, but I guess you can call them resellers. Hovever, some of them can deliver whatever you want.
Even in lower quantities (some 1000 devices).
Copyrights, well, not sure lol.
You should also be aware that what you might get is not what you asked for (at least OS vise)
Drivers, sure, for what they deliver.
Source code? No way.