Acquiring a trademark just sets a floor for when you acquired the trademark, it doesn't mean someone else hasn't already acquired it - that is a question that courts have to settle.
> it doesn't mean someone else hasn't already acquired it
It goes further than that: trademarks are registered in 45 different classes and trademarks of different classes are completely independent, but the USPTO goes by
> "Trademark, same name, same class”
meaning more than one entity can register the same trademark name in the same class, because trademarks have a requirement of distinctiveness.
