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How would that be? Of the big companies, I always thought the biggest patent troll was Google, who demanded four billion dollars from Microsoft for some MP3 related patents. (Lucky enough, Google lost).

Apple applies for a lot of patents. Apple asserts them regardless of whether they are leveraged by a particular product. If this wasn't a viable strategy, Apple wouldn't bother patenting so many things, given the cost of the application process.
 
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