I thought existing phrases and words could not be copyrighted or trademarked. Hence the advertising industry's penchant for homonym spellings like "beanz".
Garry Kasparov published a book last year with the title "Winter is Coming"
Church of Void had a song released in 2012
It reminds me of the take-downs of internet domains containing "Java". Leading to the situation of the lawyers demanding compliance by "the country formerly known as Java".