If a company "A" post an inaccurate or outdated information something about themseleves then another company "B" take it and claim it to be accurate ... It company "A" fault?
No because company "B" reponisbly is to make sure the information they taken is accurate before making some claim on it in their ads.
Verzion is a multi-dollar busniess and pretty sure they already researched and knew that the AT&T map was outdate by 3 some years but went ahead ran an ad which was misleading.
That map was real but they were misleading people with thinking it was up to date map with the ads.
Running an ad with inaccurate information is called "false adversiting" or "misleading adversiting"
If Verzion wasn't in the wrong then AT&T would had no ground to file a lawsuit againist Verzion.
It like AT&T taking 5 year old Verzion map and run an ads comparing it with it newest AT&T 3G map making Verzion look like it have few EVDO in USA compare to 3G.
And 5 year old Verzion map is real but AT&T will still be blame for trying to misleading people with an 5 year old Verzion map because they found it on the internet and claim it to be accurate
.