The US Patent and Trademark Office (USPTO) has upheld 20 of Apple's patent claims after re-examining the "Steve Jobs patent".
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A key Apple patent which governs the use of multitouch technology on its mobile device has been ruled invalid.
Gary MarshallMicrosoft's purchase of touch expert Perceptive Pixel is the latest evidence that the mouse is getting its marching orders.
Apple has patented a wireless mouse design with the U.S. Patent and Trademark Office that features a built-in touchscreen display.