"Happy Birthday to You" is sung everywhere, but because it's copyrighted, it's rarely heard on TV or in movies. A filmmaker has filed a lawsuit seeking to make the song part of the public domain.

A federal judge on Tuesday ruled that Warner/Chappell Music does not own the copyright rights to the famous "Happy Birthday to You" song, which has become a nearly mandatory part of birthday ...

The "Happy Birthday to You" song is finally in the public domain. Birthday cake on table Jessica Peterson / Getty Images/Tetra images RF Feb. 9, 2016, 1:53 PM EST / Updated Feb. 9, 2016, 1:54 PM EST ...

The winners of the Short Film (Live Action) trophy at this year’s Academy Awards cut short their speech to sing “Happy Birthday” to the film’s star, James Martin.