i don't think they have either of those words under trademark, or they aren't enforcing it publicly, as asus had no problem with the original transformer.
if they marketed it with refrences to the IP, then they could have issue, but they are using the words in a more generic sence officially, and those of us who are familiar with the pop culture refrence that is implied, are making that association on our own.
Nexus 5 32gb
Nokia Lumia 1020
Nexus 7 32GB (2013)