Source: LA Times Apple Inc is currently at war with the City of New York, known in the United States as the "Big Apple".
The bone of contention is the Apple symbol. This is the logo used by the city in an advertising campaign urging people to be energy efficient and use recycling.
Apple believes it is too close to its own logo, and will cause "consumer confusion resulting in damage and injury" to Apple, and "cause dilution of the distinctiveness" of Apple.
The city of New York contends that the logo will not be used on items offered by Apple, such as mugs, plates
(Yet, the mugs with the apple exist:) But they certainly do not represent the heart of their substantive trade.
[translation by jeremy]