How can you sue someone with their full name but no address?

Answer 1

One can't ... one needs to serve the summons to appear to where someone lives ... no address available, nobody can serve the summons ... However, there are ways to obtain addresses for most anybody these days on the internet - may cost a bunch of $$, but it is possible.

Answer 2

find his address, only way to properly serve them. Ive been sued successfully cause process server claimed to serve me or my address, but it was an old one, so I can reopen the case or get it thrown out.

Answer 3

You must be able to identify them and provide them with notice. The lawsuit can be filed with placeholders in some cases. Consult with an attorney and they can help you understand that possibilities. In some cases, the discover process will reveal the other defendants.