Dyson Knew Airwrap Patent Was Invalid, SharkNinja Claims

By Hanna Vioque (October 26, 2023, 2:32 PM BST) -- SharkNinja has fought back against infringement claims brought by Dyson at a London court, arguing that its rival knew its patent for hair-dryer add-ons was invalid, in the latest hair-pulling exchange between the appliance makers as they vie for European market dominance....

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