A brave Canadian farmer stood his ground against Monsanto in Canada and international courts. However, he indicated that had he been in the United States he would not have won due to the power of corporations in the United States.
You may find his experience interesting http://www.percyschmeiser.com/. I saw a film of his experience and ongoing crusade on behalf of farmers on the LinkTV independent news channel. It was truly inspiring - a modern day David and Goliath.