Professor Tolkien got stiffed?

This is so wrong.

The estate of "Lord of the Rings" creator J.R.R. Tolkien is suing the film studio that released the trilogy based on his books, claiming the company hasn't paid it a penny from the estimated $6 billion the films have grossed worldwide.

The suit, filed Monday, claims New Line was required to pay 7.5 percent of gross receipts to Tolkien's estate and other plaintiffs, who contend they only received an upfront payment of $62,500 for the three movies before production began.

The writer's estate, a British charity dubbed The Tolkien Trust, and original "Lord of the Rings" publisher HarperCollins filed the lawsuit against New Line Cinema in Los Angeles Superior Court. If successful, it could block the long-awaited prequel to the films.

Robert Pini, a spokesman for Time Warner Inc.'s New Line, declined to comment.