US judge rules Colin Birss `` not cool '' enough to be mistaken for Apple . iPads claimed 11.8 models were too similar to its iPad design . Apple has 21 days to appeal against the UK ruling . But Judge Colin Birss ruled that there were noticeable differences between the tablets in terms of their thickness and the designs on the back . Rivals access Apple of using its patents aggressively to disrupt sales .
US judge rules Colin Birss `` not cool '' enough to be mistaken for Apple . iPads claimed 11.8 models were too similar to its iPad design . Apple has 21 days to appeal against the UK ruling . Rivals access Apple of using its patents aggressively to disrupt sales .