UPDATE 2-Robot wars - Britain's Ocado sued by AutoStore over patent infringement
* AutoStore files lawsuits against Ocado in U.S., UK* Seeks to prevent Ocado selling technology* Also wants damages from Ocado* Ocado says not aware of any infringement* Ocado shares down 5% (Adds Ocado response, shares)By James Davey and Vanessa O'...
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