BlackBerry, the struggling mobile device maker, filed a patent-infringement lawsuit against Typo Products, the startup co-founded by Ryan Seacrest that has developed a smartphone keyboard attachment.

Asked for comment, Typo Products said, “Although we respect BlackBerry and its intellectual property, we believe that Blackberry’s claims against Typo lack merit and we intend to defend the case vigorously.”

Steve Zipperstein, BlackBerry’s general counsel and chief legal officer, said in a statement, “This is a blatant infringement against BlackBerry’s iconic keyboard, and we will vigorously protect our intellectual property against any company that attempts to copy our unique design,”

SEE ALSO: Ryan Seacrest Co-Founded a Startup Making an iPhone Keyboard

Seacrest, the entrepreneur, producer and media personality whose gigs include hosting Fox’s “American Idol,” founded Typo Products with real-estate mogul Laurence Hallier. The two have invested about $1 million in the venture. The L.A.-based startup plans to demo the $99 keyboard attachment at…

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