Lately, Apple has become really good at Patent Trolling. In the smartphone industry, first was HTC, now it's Google's turn the get the "wrath" of the patent troll. Apple claims that the Android platform started with them.
Read it in detail here.
"Apple to ITC: Andy Rubin got inspiration for Android framework while working at Apple, hence infringes an Apple API patent"Former Apple employees that have their own businesses, beware! Apple will sue you if you develop something innovative, claiming that your idea was inspired while working at Apple, making all your thoughts theirs.
Read it in detail here.