No, Marvel has a studio. Marvel Studios produced Iron Man and The Incredible Hulk.
Marvel Entertainment is just a part of the Marvel corporate umbrella that licenses characters out to other film studios - like Fox, Lionsgate, Sony, etc. And after the money exchanges hands, they really have no say on what happens.
That was the reason why Marvel Studios was created. In light of the ability to create and successful market comic book adaptations, they got tired of stuff like Ang Lee's Hulk, Fantastic Four and such being out of their control.
They want a cohesive universe that's more in line with the comics.