Whatsmynickname writes "Thought oil companies had enough patent trolling to shut down any efforts to wean us off of crude oil (Chevron and http://en.wikipedia.org/wiki/Patent_encumbrance_of_large_automotive_NiMH_batteries)? Think again. BP and DuPont (Butamax) has taken an advanced biofuel company to court over infringement of newly awarded patents for developing biobutanol [see http://blog.cleantechies.com/2011/02/15/bp-dupont-biofuels-jv-takes-gevo-to-court/%5D. When an oil company advertises it is looking for alternative fuels, it's not because they want to be socially responsible..."
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