InvestmentsTop Global NewsMarketsReal Estate Brazil cotton farmers sue Bayer over patent on GMO seed By financialnews_rlv83x - July 11, 2019 0 101 Brazilian cotton producers in the state of Mato Grosso on Thursday sued Bayer AG , 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.