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I want to implement the Cover Flow effect in my commercial application on Windows. Are there any license issues about it? Because I think it has been patented by Apple.

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Apple has a patent on it (…). You might want to contact a lawyer for guidance and/or Apple for licensing. – Vitor Jul 13 '11 at 16:48
@Vitor: actually, they appear to have more than just the one. Note that 4 of those are design patents, so they're directed specifically to the visual design (how it looks). The utility patents look less general -- restricted to a touch-screen device, mobile device, etc. – Jerry Coffin Jul 13 '11 at 18:04
@Jerry Anyway, the question cannot be adequately answered without a patent attorney and, probably, without contacting Apple and asking about their IP licensing policy. – Vitor Jul 13 '11 at 18:13
@Vitor: I quite agree. Furthermore, it sounds like Apple's IP licensing policy may be a bit...unsettled at the moment. – Jerry Coffin Jul 13 '11 at 18:18
@Anna I'd ask you also to consider if this question should really be kept open. It's about IP law, not software development proper. It could be also a patent about a bikeshed, and the question would be the same. – Vitor Jul 13 '11 at 20:46

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Marco, strictly legal you'll have legal issues IF AND ONLY IF your solution implements cover flow with the same look and feel (NOT colors but dimensions relation and animations). As you'll see some controls' resellers implement their solutions but change animations (like flip for resize) and they go live.

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