What if the farmer was trying to clear the land with roundup and the accidental gmo modified crops prevented him from doing so. Could he sue for damages?
I could make up some convoluted argument but… the neighbor conducted the first sale so this should have extinguished any further patent claim. Of course, IANAL.
>A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention.
In this, letting the plant reproduce arguably falls under "making" (ie. manufacture) of the patented thing (the genetically modified plant).