Kirby’s heirs seeking copyright extension for Marvel characters

Just caught this story on the Guardian culture page about the heirs of Jack Kirby seeking to extend the copyright on the Marvel characters that he co-created with Stan Lee. From what I understand, comic copyrights appear to be fairly complicated (certainly more so than book publishing) and perhaps it is an issue that needs to be opened up and simplified.

Given the recent heckling over Google Books and publishing, it seems that this rolling issue will carry on into a new area.