Fun Legal Disclaimer [T-mo edition]

As seen on the bottom of a T-Mobile e-mail pitch to go to paperless billing for Arbor Day and have a tree planted on my behalf:

Limit one tree per account.
[...]
T-Mobile and the magenta color are federally registered trademarks, and t-zones is a service mark of Deutsche Telekom AG.

FYI: I took them up on the offer as I never go over on minutes anyway, might as well save a tree and our postman's back.