The well known clone maker Psystar has made the next attempt in its series of desperate measures to justify selling Apple clones. Psystar has now made a statement that because Apple did not file the copyright for the Mac OS X operating system at the U.S. Copyright Office, Apple's copyright claims are invalid and that they cannot enforce this upon Psystar without owning the copyright. Apple's copyright registration number TX0005401457, created in 2001 (around the time that OS X was introduced) files a copyright on a "software program" named Mac OS X, but Psystar argues that this is not the copyright that they filed for Mac OS X. However, if, however unlikely, it proves to be true then this could be a calling for clone makers everywhere to start hitting the shelves with their own Frankenmacs. Even then, Apple could still file the copyright while the trial is in progress, although it is not clear how much of an effect that would really have.