IMHO, your legal counsel provides advice, but that's it. You're already sitting on the receiving end of bullying with an existential threat, so there's a strate

IMHO, your legal counsel provides advice, but that's it. You're already sitting on the receiving end of bullying with an existential threat, so there's a strategic choice (talk/don't talk) with risk on either side. As a founder who has taken on a legal threat from a big-corp before, know that bigger companies are in the habit of being bullies like this, because they get away with it far more than they should, and they might not even realize how stupid it is. Big-corp's lawyers are simply incentivized to rack up billable hours, legit or not. But when you can make it clear to big-corp's strategic decision makers that there's far less upside than they expect (including that they have practically zero chance of winning anything), and far more downside (including that they will really look like idiots in front of their customers, their employees, future strategic partners, etc), big-corp usually calls off its lawyers and moves on to the next person on their hit-list. They're usually rational enough not to pursue negative-ROI activities for very long simply for vengeance. If the threat of going public isn't enough to make them back down, it's ugly, but you've got to follow through.