[echoangle]

First, I'm not sure your example comes close to infringing the trademark, but even if it does: Wouldn't the correct step be to inform the infringing party that you see it as infringement and give them a date by shich they have to rebrand, and give it to your lawyer after that? Why would you make threats about destroying their reputation by doing a keynote about them if you are legally in the right? That's just childish.