On February 6, 2007, the US Court of Appeals for the Ninth Circuit ruled that a class-action lawsuit against Wal-Mart Stores Inc. for allegedly discriminating against female employees should go to trial. The decision upheld a 2004 certification from the US District Court for the Northern District of California. Wal-Mart had appealed to the Ninth Circuit in 2005, arguing that the six lead plaintiffs were not typical or common of the class. Wal-Mart also objected to the size of the class certified, which they say is the largest in US history and would violate its due process rights. Wal-Mart petitioned the US Supreme Court for certiorari, which was granted in December 2010. On June 20, 2011, the Supreme Court rejected the lawsuit, ruling [PDF] that the women failed to meet the requirements for class certification.