I already acknowledged that this view exists in the comment you replied to. However, I suspect this view stems from farmers talking to the press, and not from the careful reading of court records. See for example this quote from your second link:
> The judge also called the farmers' claims that they could be subject to patent-infringement lawsuits "unsubstantiated" because "not one single plaintiff claims to have been so threatened."
The Wikipedia article on Monsanto Canada Inc. v. Schmeiser does mention that he was convicted without having used the pesticide, but the court did not believe the contamination was accidental in any case.