503 F.3d 397 (5th Cir. 2007) Cited 1,455 times
Holding that "to survive a Rule 12(b) motion to dismiss, a complaint 'does not need detailed factual allegations,' but must provide the plaintiff's grounds for entitlement to relief-including factual allegations that when assumed to be true 'raise a right to relief above the speculative level.'" (quoting Twombly, 550 U.S. at 555)