I don't know about this. When talking about FF's rights, I usually hear that Galactus and Silver Surfer are a package deal with FF, but I haven't heard anything regarding Dr. Doom.
Doom is in my top three Marvel villains, I would love to see him in MCU movies if possible.
It is sad The villains of Iron Man I like more than others are Ghost and Madame Masque, so I hope they can make it to the big screen. One of the most interesting villain that IM faced for me is Dr. Doom, but then Doom is mainly FF's villain, not his.
250 pages!!! Baumer seriously underestimated our members' incredible effort of derailing thread when he put 150 pages as the goal for weekend thread in BSG