Who owns "Happy Birthday Song"

"Happy Birthday" began as "Good Morning Dear Children" and was written by educators Mildred and Patty Hill in 1893. In 1924, a publisher changed the opening line to "Happy Birthday to You" and it became a ritual to sing the song to anyone celebrating his or her birthday. In 1934, after hearing the song in a Broadway musical, a third Hill sister, Jessica, sued the show and won. The Hill family was