Just to clarify. The lawsuit that I'm aware of entailed a farmer using roundup on his field and discovering that some things didn't die.
The farmer was Percy Schmeiser. He intentionally isolated and reused Monsanto's "Roundup-Ready" seeds, over several years, and openly admitted doing so. There was a documentary about him, that got nearly all the facts completely wrong, thus leading to many misconceptions. It is funny that this guy turned into a poster child for the anti-GMO movement.
Soon this particular issue will be moot. Glyphosate, the herbicide in Roundup, is already off patent, and many of the "Roundup-Ready" seeds go off patent next year.