The problem here is that large companies face little cost in launching unfounded lawsuits against individuals or small companies. And it's often in the interest

The problem here is that large companies face little cost in launching unfounded lawsuits against individuals or small companies. And it's often in the interest of the smaller side to back down, because if they don't they'll be ruined, and even if they win they won't get anything. I think this could be remedied by requiring that if the big company loses the lawsuit, it has to pay substancial sums to the smaller entity (maybe an amount could be decided by the jury based on how outrageous their claim was).