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...this litigation (Ex. 2 ?? 24, 28, 155, 157); and is preempted by federal copyright law and unenforceable under state law. (Ex. 22 (SCO's Resp. to IBM's Third Set of Interrogatories) at 38-39.) SCO also claims all rights to enforce the GPL (and thus also the LGPL) are waived and all are estopped from enforcing the GPL. (Ex. 2 at 20 (Seventh Affirmative Defense); Ex. 23 at 213:14-215:7.) As a result, SCO cannot here rely on the GPL or the LGPL (which is identical to the GPL insofar as relevant here) as a grant of license or permission to copy and distribute the IBM Copyrighted Works.