the question is in the title, links below: -
http://www.bbc.co.uk/news/business-21124214
http://www.bloomberg.com/news/2013-01-21/atari-u-s-operations-file-for-chapter-11-bankruptcy.html
http://www.telegraph.co.uk/technology/video-games/video-game-news/9816068/Atari-files-for-bankruptcy-in-the-US.html
http://www.foxnews.com/tech/2013/01/21/game-over-atari-files-for-bankruptcy/
http://www.bbc.co.uk/news/business-21124214
http://www.bloomberg.com/news/2013-01-21/atari-u-s-operations-file-for-chapter-11-bankruptcy.html
http://www.telegraph.co.uk/technology/video-games/video-game-news/9816068/Atari-files-for-bankruptcy-in-the-US.html
http://www.foxnews.com/tech/2013/01/21/game-over-atari-files-for-bankruptcy/