Then every chain restaurant wouldn't need to have their own, non-infringing Happy Birthday song... One possibly crackpot theory that just occurred to me is tha

Then every chain restaurant wouldn't need to have their own, non-infringing Happy Birthday song... One possibly crackpot theory that just occurred to me is that in the _Futurama_ universe, copyright was extended so far as to be perpetual[1] [1] http://www.cc.com/video-clips/ubbd92/futurama-nibbler-s-birthday http://www.cc.com/video-clips/ubbd92/futurama-nibbler-s-birt...