What was frustrating to us was the sheer number of Apple employees who recommended our product time and time again, with Apple management well aware of our product and its name. With millions of downloads (many from Apple employees), we're frustrated because Apple recommended and encouraged us and then--six years later--decided it was time to litigate.
Again, I'm not saying we're right. Apple is completely in the right to defend their mark, but I really don't think it it's in their best interest at all, and if we posed any serious threat, they would have taken action a long time ago.
* Edit: Sorry if this post is sloppy. I haven't slept in a while.