In October 2015, John Carpenter won a plagiarism case against Luc Besson over 'Lockout' proving clear similarities to 'Escape from New York' and 'Escape from L.A.". A French court ruled that enough similar distinctive elements from both Carpenter's films were borrowed to merit a sanction.
The trivia items below may give away important plot points.
The film bears a strong resemblance to the cult classic Escape from New York (1981) and its sequel, Escape from L.A. (1996). New York was about the protagonist, a convict, being sent into the title city, a prison in the future, to rescue the President after Air Force One crashes. L.A. was about the same protagonist being sent into the title city (also a prison in the future) to save the President's daughter and recover a doomsday device. This film follows a convict as he's sent onto a prison ship in space to rescue the President's daughter and prevent the prisoners from crashing into Earth. Even the lead protagonists' name are similar, Escape's Snake (Kurt Russell) and Lockout's Snow (Guy Pearce).