Feige discussed the franchise's third instalment during a recent interview with Empire, suggesting that the film will focus on isolating Tony Stark (Robert Downey Jr), in contrast to the team dynamic of The Avengers.
"Iron Man 3 has been structured specifically to be the antidote to The Avengers," Feige said. "Circumstances in the story separate Tony from having access to anything.
"We wanted to take Tony back to, metaphorically speaking, the cave from Iron Man, the first half of Iron Man, when he's cut off from the world and needs just focus on his intellects to get himself out of his situation.
"So he's not calling Thor, he's not calling Captain America, he can't press a special button to have the helicarrier come rescue him, so I think that'll be a nice complement to the team-up of Avengers."
Jessica Chastain and Guy Pearce are both reportedly in talks to star in Iron Man 3. Scarlett Johansson has confirmed that she will not reprise her role as Black Widow.
The Avengers made £2.5m in its opening day at the UK box office, making it the third-biggest Thursday opening of all time.
Watch Kevin Feige discussing the name change for The Avengers in the UK below: