Logo of Bayer AG is pictured at the annual results news conference of the German drugmaker in LeverkusenMore

By Ana Mano

SAO PAULO (Reuters) – Brazilian cotton producers in the state of Mato Grosso on Thursday sued Bayer AG <BAYGn.DE>, seeking to cancel the chemical company’s patent protection for its Bollgard II RR Flex genetically modified cotton seed, according to a statement sent to Reuters.

The farmers, hoping to regain $151 million in royalty payments, claim the genetically modified seed does not constitute a de facto technological innovation, according to the statement issued by the Mato Grosso Cotton Producers Association (AMPA). The lawsuit also names Brazil’s national patents office as a defendant.

Mato Grosso soybean farmers used a similar argument when they sued in Brazil to cancel

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