Larian had a similar experience with their first RPG, where the publisher went out of business, taking the rights to the game with them.
Do you mean LMK ? Well, I have found out that it is likely that a tiny (probably one-man) company still holds the rights of everything that belonged to Attic.
They even still use the old domain name : http://www.attic.de
Plus this one : http://www.fantastic-realms.de