These are from the Palm operating system—which if you remember had a card system that looked and functioned nearly identically to the current iOS multi-tasking.
Qualcomm owns those Palm patents.
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Apple could have bought the Palm patents if they had wanted. They really did copy the Palm interface (or independently came to a very similar conclusion).
*sigh* I've tried before. Many MacRumors readers seem to think any IP transaction they don't understand means "PaTeNt TrOlL derrr."