On May 10, 2013, the Federal Circuit, sitting en banc,1 issued a per curiam decision in CLS Bank International v. Alice Corporation Pty. Ltd., No. 2011-1301, affirming that the asserted method, computer-readable media, and system claims are not directed to eligible subject matter under 35 U.S.C. §101. Although the ultimate holding by the court was limited, voluminous concurring and dissenting opinions issued with the per curiam decision reveal a serious and deep divide over what claims are patent-eligible and what the test for patent eligibility should be for computer-related claims.