Mildred was already dead by then. Jill would only have until 1946 to enjoy the proceeds of her creation before she too died, and both sisters had no children. But the Hill Trust, and their publishing partners, have profited handsomely. They sold the rights to Time-Warner Corporation in 1998, and their lawyers still enforce a law that demands that you buy a license if you want to use Happy Birthday in film, TV, radio, or anywhere open to the public. In 2008, the song yielded over $2 million in royalties, and this revenue stream will continue until copyright runs out in 2030 in the USA, and 2016 in the EU.