As I noted in an earlier post, Monsanto has been very active in the developing world. One of their activities has been to find food-crop varieties that have been developed by local farmers over many years (generations? millenia?) to thrive in a particular region, and then to patent those varieties.
Again, the patent wars in this country may seem to be about music and movies, but world-wide it's really about the New Global Overlords, health, and the food supply.
BTW -- Greenpeace has been a thorn in Monsanto's side since long before Monsanto was a "biotech" company -- i.e., back when it was just a big, dirty, polluting chemical company.