Peter Pan began as a very successful stage play, which premiered in London on December 27, 1904. Barrie subsequently adapted it into a novel, published as Peter and Wendy in 1911 (but most often now published as Peter Pan).
The name "Wendy" became popular because of its use in Peter Pan.
In Peter Pan, the girl Wendy is invited to Neverland to be a mother for Peter's gang of Lost Boys. Many adventures ensue, often involving Peter's nemesis Captain Hook, before Wendy decides that her place is at home with her family. (See also Shadow.)
Several musical versions of the play have been produced, of which the best known are Jerome Kern's 1924 version, Leonard Bernstein's 1950 version, and the 1954 version mounted by Jerome Robbins with songs by two writing teams, Mark Charlap[?] with Carolyn Leigh[?], and Jule Styne with Betty Comden and Adolph Green.
Several people have attempted to create sequels to the story, generally failing to capture whatever it was that made the original such a success.
Gilbert Adair[?]'s novel Peter Pan and the Only Children was published in 1987. It had Peter living with a new gang of Lost Boys under the ocean, recruiting new members from children who fall from passing ships.
The government of the United Kingdom has enacted what amounts to a perpetual copyright (with a compulsory licence provision) on the works of the Peter Pan cycle. The exact phrasing is in section 301 of the Copyright, Designs and Patents Act 1988:
"301. The provisions of Schedule 6 have effect for conferring on trustees for the benefit of the Hospital for Sick Children, Great Ormond Street, London, a right to a royalty in respect of the public performance, commercial publication, broadcasting or inclusion in a cable programme service of the play 'Peter Pan' by Sir James Matthew Barrie, or of any adaptation of that work, notwithstanding that copyright in the work expired on 31 December 1987." (source (http://www.hmso.gov.uk/acts/acts1988/Ukpga_19880048_en_21.htm#mdiv301))
The only time this UK copyright will expire is when Great Ormond Street Hospital[?] ceases to exist, or this section is repealed. With the beneficiary being a children's hospital, it is hard to imagine a future government taking such an action.
This is different from the pseudo-perpetual copyright created through successive copyright term extensions in that the United Kingdom lacks a monolithic constitution and thus lacks a "limited times" clause, allowing the UK Parliament to say "This copyright is hereby perpetual, and royalties go to this specific hospital."
On December 20, 2002, writer Emily Somma[?] filed a preemptive lawsuit against the hospital to protect her derivative work, After the Rain: A New Adventure for Peter Pan. The hospital previously warned her that her book would be in violation of its copyrights. Somma argues that the characters are now in the public domain.