New Legal Question

Hello,

The company I work for will be producing a commercial for a local car dealership. The spot is slated to run during New England Patriots football games. Obviously we don't have permission to mention the Patriots in the commercial, or to use their logo.

If we shoot a spot with the talent wearing Patriots colors (but not an official Patriots jersey with the Patriots logo on it), and she says the line "go Pats" (not "Go Patriots"), what kind of legalities might we be toying with?

Again, we are not displaying the Patriots logo, and we are saying "Go Pats", instead of "Go Patriots".

Just a side note, I've seen many businesses produce commercials with the line "Go Sox" in it when that business is not affiliated with the Boston Red Sox.

Are nicknames for teams and organizations Trademarked along with official names?

Thanks,

Aaron