I think it's out of copyright now for them, because I met the woman who was the model for Tinkerbell. She has a book out and signed prints of Tinkerbell - I cannot for the life of me remember why I was at this event, if maybe it was a just a coincidence I happened to be there when this person was signing things or if I went because I somehow knew the person hosting the event. Anyway, i seem to recall that part of the reason she is able to promote herself now as the "real Tinkerbell" is because of a copyright lapse.
She was pretty interesting, actually.
http://www.tinkerbelltalks.com/ - awful music plays on the site so mute first if you are at work.