Apple has trademarked a Unicode codepoint
https://www.apple.com/legal/intellectual-property/guidelinesfor3rdparties.html
Use of the “keyboard”; Apple Logo (Option-Shift-K) for commercial purposes without the prior written consent of Apple may constitute trademark infringement and unfair competition in violation of federal and state laws. Use of Apple trademarks may be prohibited, unless expressly authorized.
Comments
According to http://hea-www.harvard.edu/~fine/OSX/unicode_apple_logo.html it's in a private use area.
The definition seems to be from http://www.unicode.org/Public/MAPPINGS/VENDORS/APPLE/CORPCHA...
and quoting from http://www.unicode.org/mail-arch/unicode-ml/Archives-Old/UML... :Yes, I remember reading that at some point, but what I found interesting is that they seem to be trademarking not the glyph, but the codepoint, so these fonts: http://en.wikipedia.org/wiki/Private_Use_Areas#U.2BF8FF_usag... are breaking the law. Or rather, anything with the character in it, like Codhisattva's comment.
How are they breaking the law? That would require use in an infringing way, and the law has some well defined requirements for what that means.
First, Why do you think that Apple claims a trademark on the codepoint? It's not something Apple mentioned in the quote I did earlier:
I also did a USPTO trademark search for 'F8FF' and found nothing, so it doesn't look like the codepoint is trademarked.
Second, even if there were some sort of trademark on F8FF, inclusion of a symbol in a font isn't in and of itself trademark infringement. The use must cause a likelihood of customer confusion, otherwise no infringement is possible.
Take a look at http://fortawesome.github.io/Font-Awesome/icons/#brand or http://www.brandsoftheworld.com/search/logo?search_api_views... and tell me if you think they had to permission from the trademark holders.
Use of a trademark doesn't mean trademark infringement. Codhisattva's comment is not trademark infringement. There's no misrepresentation or market confusion. I can say things like "compatible with Micosoft Windows" even though I don't control that trademark or have permission from Microsoft.
Not only that, but in the US Codhisattva's comment is covered by free speech. I can sell a button that says "No !" as a form of protest or political commentary even if selling a T-shirt which says "I♥!" is likely infringement (doubly so if it infringes on NYC's INY style).
Err, "I♥NY".
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