I'm kind of surprised and amused that the NBA expansion team chose the name of a Roast Beef Sandwich restaurant in Minnesota. http://www.mavericksroastbeef.com
I'm kind of surprised and amused that a Roast Beef Sandwich restaurant in Minnesota chose a name that refers to a cow that has escaped from a ranch and lived out its days stringy and free from the slaughterhouse.
"Mavericks" is different than both the singular noun/adjective found in Ubuntu, "Maverick" and the plural adjective/noun NBA team, "Mavericks". It is a singular place name - "Mavericks". Cook got it mixed up a few times in the keynote too. It's a tricky one to use...
That actually is pretty weird from a trademark point of view.
(Things called maverick which are not operating systems are irrelevant for that!)