The article discusses a court case involving the patent claims of Eli Lily & Co. and Human Genome Sciences Inc. (HGS) in Great Britain. The suit followed from the assertion of the Supreme Court that the claims are capable of industrial application. The Court of Appeal has addressed remaining issues regarding the claims related to the patent of Neutrokine-α protein and asserted that the claims were sufficient. Eli Lily has asked for the patent to be revoked.