I’m gonna shill for Monsanto here. They don’t sue due to drifting pollen. Only farmers who demonstrably violate their signed contract and deliberately violate the patent by saving seed.
Monsanto is not the only company with seed or plant patents, nor the only one to go after farmers who violate their seed contracts.
Stop with the anti business, anti science internet meme mongering.
Gosh, how did the pollen get to those fields? Did the target farmer do anything to collect it?
Oh, wait, that seed belonging to said offending farmer is private property. You propose that Monsanto's patent precludes their use of their private property, corn that they planted, weeded, and harvested on their soil. What if they don't want Monsanto's damned Bt corn pollen because it renders their product toxic? What if they want to be GMO free. Monsanto has taken that option from them. Can they sue? If Monsanto doesn't want people using their pollen then they should control keep it under their control.
At least you are honest about the "shilling."