Elvis Presley Enterprises, LLC sued Chrysalis Music Group, Inc. in New York County Supreme Court for breach of a 2002 world-wide Music Publishing Administration Agreement. The Complaint makes for interesting reading and lays out the history of Elvis Presley's songwriting career. The Complaint alleges Chrysalis failed to properly license, collect and protect the song assets. There is also a claim that Chrysalis failed to properly promote the song catalog and there were "lost opportunities."
While I find the arguments regarding lack of properly accounting, paying, and protecting the rights of the songs persuasive, I doubt a cause of action related to "lost opportunities" will fly.
The music publishing administration agreement is attached to the complaint. You can read more at The Hollywood Reporter Esq. Blog.