When did Apple sue for patents it isn't using?Well, obviously the patent system works when it benefits Apple. When it doesn't, then its time for reform.
I get it, most of you in this discussion are completely uneducated about patents. Most tech companies (notable exception IBM) do not build patent portfolios to use them offensively. They use them as a defense against other companies, a la Mutually Assured Destruction. "If you sue me for this patent, I'll sue you for that one." It's only in the rare cases when another company blatantly copies patented tech being used to differentiate a product that the big tech giants (Microsoft, Oracle, Apple, Google, etc.) bring out the lawyers. That's why they aren't patent trolls.
If you aren't familiar with the distinctions in design patents or standards essential patents, you really shouldn't be in the discussion either.