Don’t know that the Chargers are going to be upset that their logo is being placed on the curbs of San Diego homes. One of my neighbors choose this option and it’s Charger baby blue and looks nice.
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Definitely sounds like unauthorized use of a trademark – unless they have a license, which I doubt. Suggests sponsorship or approval of the number painting company by the trademark owner. Trademark owners (unlike copyright and patent owners) have an affirmative duty to police their marks and stop unauthorized uses that might cause confusion. And NFL teams are pretty vigorous in defending their marks.
