I would agree on this with one caveat - you should be able to run this battle on a back burner or don't go there. If it would consume you ... Don't. Your time a

I would agree on this with one caveat - you should be able to run this battle on a back burner or don't go there. If it would consume you ... Don't. Your time and positive energy are too important. But if you can (it's what's in the CEO learning curve imho) spent a small faction of your time dealing with competitors. If this one is a proper competitor and you have leverage (public goodwill, cash to burn for litigation and communication) - go there. Your investors are probably with you if the threat is both to you and their investment. The outrage factor will probably play into your hands as well. A bankrolled litigation fund (smallish) is doable.