User blog:Sharpie301/Character Rights..?

Hi there,

I was just was wondering what the character rights were on some of the characters, I understand that Marvel sold a lot of the Characters to many different Studios, For example the X-men, Fantastic Four belong to 20th Century Fox or Spider man, Ghost spirit to Columbia Pictures

But what is the rights on Madam HYDRA/ Viper since she is set to be in the Wolverine and there has been rumors she may appear in The Black Widow(Film) or Captain America 2, Would she be a different person/mutant within the two productions, Who ownes her 20th Century Fox or Marvel Studios?

I learnt that Quickilver and Scarlet Witch can be used in both Productions, would this be the same case?

Thanks :)