Monsanto has long been trying to establish control over the seeds of the plants that produce food for the world. They have patented a number of genetically altered food crops, which can only be grown with proper license, and the seeds for which must be purchased anew each year.
Alas, genetically engineered (GE) crops cannot be contained. And rather than being found guilty of contaminating farmers' property, Monsanto has successfully sued hundreds of unsuspecting farmers for patent infringement when unlicensed GE crops were found growing in their fields. Many farmers have subsequently, quite literally, lost their farms.