[a fool in paradise]

Warner Brothers is still litigious over “Happy Birthday To You” which is over 100 years old (the melody is lifted from “Good Morning To You”).

[Vigilanteman]

Correct. Plus, their ownership of the rights is highly questionable since there is no record of who penned the original words, only the melody and arrangement.

In an honest court system, their extortion attempts would be laughed away like someone trying to patent "breathing".