When the farmer plants Monsanto genetically-modified seed, he is required to sign a very interesting and one-sided "Monsanto Technology/Stewardship Agreement" that shifts all liability from Monsanto to the farmer, plus the added benefit of making Monsanto the only seed that can ever be planted, once the field is infected with Monsanto GMO's.
The organic farmer across the road gets his field contaminated with pollen from the Monsanto farmer's crops several things happen. He loses his organic certification of product from the cross pollination from the Monsanto farmer, plus the infected organic farmer is now infringing on Monsanto's patent. The organic farmer can only sue the farmer across the road and Monsanto will sue the organic farmer, because he possesses Monsanto DNA on his field without the Monsanto agreement. Monsanto needs only a little bit of pollen to blow on a non-Monsanto farmer and their farm is Monsanto's.
Both farmers eventually lose their farms and Monsanto is the big winner, since all the land involved is locked-in to Monsanto GMO. Monsanto has a brilliant plan to monopolize all the food of the world, since they own the patents and pollen goes everywhere. It's a brilliant plan to make corporations like Monsanto the only food producers in the world and allows Monsanto a vehicle to seize many farms for the patent violations. The "Monsanto Technology/Stewardship Agreement" is as brilliant as it is evil. How many other ways can Monsanto ensure they control all the world's farms and produce?

