I've heard these cases have all but stopped, where they will refund the cost of new non-gmo seeds(though perhaps for less than they are worth?) Though they make you believe to be competitive in the market you'd need increased yield provided from a gmo and then they'll certainly sue you if you try to reseed your field as opposed to buying new seed. Same goes if you try to reseed their gmo after it overtakes your field. Last I heard there were few to no reseeders left having all been sued with perpetual litigation until bankruptcy