David Riley wrote:
They probably mean to use it as a proper noun, which I
suppose is
actually a subset of the set of nouns.
No, officially trademarks are only ever supposed to be used as
adjectives. (In the US, not sure about elsewhere.) But that's really
only important to how a company uses its own trademarks, and to how
competitors use them. There's no way they can control how the public
uses them, other than perhaps by attempting to educate the public.