BlackBerry has won a court order banning the sale of an iPhone keyboard case that mimicked its patented qwerty design.

The $99 (£60, AU$109) Typo keyboard case added a couple of extra inches to an iPhone, but provided a physical keyboard experience that's a little too close to the one BlackBerry pioneered, according to a judge.

U.S. District Judge William Orrick said similarities between the case and BlackBerry's IP were "unmistakeable" and that Typo was deliberately targeting smartphone users who prefer qwerty action.

"BlackBerry has convincingly shown that BlackBerry's keyboard designs are a key driver of demand and goodwill for BlackBerry phones," the judge wrote in ordering a temporary sales ban.

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Typo, which is made by American Idol host Ryan Seacreast's company Typo Products LLC, had failed to make a convincing case that its designs were not infringing on BlackBerry patents, the judge said.

The company plans to appeal the order and told Bloomberg Businessweek it would "continue to make and sell innovative products that busy people can't live without."

The court victory will come as a small ray of sunshine by the Canadian smartphone company, following its grim first quarter earnings report, released on Friday.

The beleaguered firm also announced plans to bring back the classic BlackBerry Bold, which bares that "unmistakably" similar physical qwerty keyboard.

Via The Verge