Disney-Marvel and Kirby problems?

Ran across an article where it looks like there could be some issues coming from the Marvel purchase.  The heirs of Jack Kirby have filed some copyright terminations for the company’s biggest superheros.  That $4 billion purchase may end up costing a little more.  Read more about it here:

http://mediadecoder.blogs.nytimes.com/2009/09/20/in-wake-of-disney-marvel-deal-cartoonists-heirs-seek-to-reclaim-rights/?hp