The first time someone threatened to sue my startup I took it very seriously and spent a lot of time worrying about it. I also ran up some legal bills talking

The first time someone threatened to sue my startup I took it very seriously and spent a lot of time worrying about it. I also ran up some legal bills talking to my counsel about it. The second time someone threatened to sue my startup I took it seriously and spent some time researching their claims but didn't bother with the counsel, since lawyers are pricey. The third time someone threatened to sue my startup I did a quick Google search on their name, archived the e-mail, and got on with it. Since once you've been at this for a while you'll get desensitized to idle threats, I recommend learning from my experience and skipping to the blasé stage immediately.