Apple pulls worse crap out of their hat all the time. Cisco is *huge* and I'm sure their spam filter loved reading your email.
Okay, CISCO should maybe have some protection for their registered trademark. But - get serious! There is NOBODY in this country right now - except for maybe a few Cisco employees - who think "Cisco" when they hear "iPhone." I think that they just have dollar signs in their eyes and see Apple as a target - it's not about protecting a name that no one associates with Cisco!
I, for one, sent an email to Cisco and let them know that their lawsuit is pretty stupid, and that I'm sure staying far away from Cisco products until they get a bit more amenable with Apple. Anyone out there with me??