A district judge ruled yesterday that Warner-Chappell does not own the copyright to Happy Birthday. Warner-Chappell had been collecting licensing fees on the song that reportedly totaled 2 million dollars a year.
For more information about the ruling:
http://ipkitten.blogspot.com/2015/09/happy-birthday-to-everyone-candles.html
http://www.plainsite.org/dockets/u2yv5yz8/california-central-district-court/rupa-marya-v-warner-chappell-music-inc/