LONDON, England (CNN) -- An unlikely feud is seeing the film empire that built its name on cartoons for children -- the giant Disney corporation -- at odds with Britain's most famous hospital for sick children.
And it is all over another legendary children's favorite -- Peter Pan, the boy who never grew up.
In what the New York Post billed this week as "Sick kids vs. Disney in Peter Pan dust up," Great Ormond Street hospital for children in London is consulting lawyers over a book published by a Disney subsidiary in the United States.
"Peter and the Starcatchers" by Dave Barry and Ridley Pearson and published by Disney's Hyperion Books is billed as a prequel to the children's classic, "Peter Pan."
Great Ormond Street was left the royalties to Peter Pan in 1929 by the author, J.M. Barrie -- and million of pounds earned from copyright fees have gone towards treating sick children in Britain ever since.
This weekend sees the UK premiere of a film about Barrie's life, "Finding Neverland" -- starring Johnny Depp, Kate Winslet and Dustin Hoffman. The hospital will receive royalties from book excerpts portrayed in the film.
But the hospital charity says is getting nothing from "Peter and the Starcatchers" -- which has been on the New York Times best seller lists, has had an extensive author tour and has its own Web site. They say the book has been published without its permission.
A spokesman for the hospital told CNN that Great Ormond Street held the copyright to Peter Pan in the United States until 2023 -- although it runs out in EU countries in 2007 -- and said: "We are considering our options."
Disney, meanwhile, has insisted that Peter Pan is out of copyright in the United States.
"The copyright to the J.M. Barrie stories expired in the U.S. prior to 1998, the effective date of the U.S. Copyright Extension Act, and thus were ineligible for any extension of their term," Disney said in a statement to the Daily Telegraph.