Earlier quoted context omitted.
The term to search for this is barratry and there are laws against it in some jurisdictions. Realistically, you will not win a judgment on this to compensate you for your time dealing with a single cease and desist letter. If someone shows a really excessive pattern of it, perhaps a judge or a bar association could be convinced to make an example of them.
I guess that does address my concrete question as given. But I think I was less imagining a countersuit that literally just "seeks damages for wasted time and effort"... and more imagining a countersuit that can somehow "rope in" the claims in the original suit, so as to force those claims to be evaluated and case law to be created upon that evaluation — whether the original claimant likes it or not. Imagine, by anal…
> As for your requests for information, or for action, directed to me: I
> would remind you that it is you, not I, who are making claims; and it
> is you, not I, who must substantiate those claims. You have not done so.
Which party would bear the burden of proof in step 3? Does it get reversed or stay as if the step 1 threat went to court?