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Syngenta GA21 maize claims upheld

A US federal appeals court has upheld a lower court's ruling that Syngenta has not violated Monsanto's patents in the commercialisation of genetically modified glyphosate-tolerant GA21 maize. Last year, the Delaware District Court ruled that the claims of Monsanto's "Shah" patent (No 4,940,835) were invalid and that the claims of the "Lundquist" patents (Nos 5,538,880 and 6,013,863) were not infringed (Agrow No 496, p 1). "We are extremely pleased that the appeals court has confirmed our right to sell Agrisure GT to US corn growers," says Syngenta Seeds chief operating officer Mike Mack.



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