Cipla infringing Roche's patent in lung cancer drug: HC
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In a setback to Cipla, the Delhi High Court today held that the Indian drug major was infringing Swiss pharmaceutical company Hoffman-La Roche's patent in lung cancer drug erlotinib hydrochloride, sold under the name of Tarceva.
A bench of justices Pradeep Nandrajog and Mukta Gupta arrived at the conclusion by noting that Cipla's lung cancer medicine, Erlocip, was one polymorphic form of the erlotinib hydrochloride compound, which may exist in several forms, and Roche's patent claim was not limited to any one such version.
"This (the patent) is a sufficiently broad claim that is clearly not limited to any polymorphic version of erlotinib hydrochloride, but to erlotinib hydrochloride itself. This compound may exist in several polymorphic forms, but any and all such forms will be subsumed within this patent. Therefore as Cipla s Erlocip is admittedly one particular polymorphic form of the erlotinib hydrochloride compound (polymorph B), it will clearly infringe the IN 774 patent (of Roche).
A bench of justices Pradeep Nandrajog and Mukta Gupta arrived at the conclusion by noting that Cipla's lung cancer medicine, Erlocip, was one polymorphic form of the erlotinib hydrochloride compound, which may exist in several forms, and Roche's patent claim was not limited to any one such version.
"This (the patent) is a sufficiently broad claim that is clearly not limited to any polymorphic version of erlotinib hydrochloride, but to erlotinib hydrochloride itself. This compound may exist in several polymorphic forms, but any and all such forms will be subsumed within this patent. Therefore as Cipla s Erlocip is admittedly one particular polymorphic form of the erlotinib hydrochloride compound (polymorph B), it will clearly infringe the IN 774 patent (of Roche).
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