How?
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Read what you wrote to yourself "Apple patents dates back to 2007, just months before linux". Are you ok?
No argument there. I guess you know what happen to that Linux device after first iphone announcement, everyone scrambled and went back to drawing board. Starting from scratch, including Google device known as Android. The first Android prototype did not look anything like today's, it still had physical keyboards similar to Blackberry, then suddenly everyone comes out with touchscreen device after first iphone.