Key Apple patent used against Samsung under fire

A key patent that Apple successfully used against Samsung in its multibillion-dollar courtroom brawl earlier this year is at risk following a re-examination by the U.S. Patent and Trademark Office.
All 21 claims of U.S. patent No. 7,844,915 -- also known as the "pinch to zoom" patent -- were rejected by the Patent Office today, following a re-examination.
Samsung pointed this out in a filing to U.S. District Court Judge Lucy Koh this afternoon, noting that it was "relevant" given the company's effort for a retrial, as well as Apple'