The Birthday song is freed

In a stunning reversal of decades of copyright claims, the judge ruled that 
Warner/Chappell never had the right to charge for the use of the "Happy 
Birthday To You" song. Warner had been enforcing a copyright since 1988, 
when it bought Birch Tree Group, the successor to Clayton F. Summy Co., 
which claimed the original disputed copyright.

http://www.latimes.com/local/lanow/la-me-ln-happy-birthday-song-lawsuit-decision-20150922-story.html