Scrub Daddy accuses 3M of ‘sponging off’ invention

Delaware plaintiff best known for top-selling polymer sponges shaped in a smiley face that change texture in water | 3M bought another business founded by Scrub Daddy owner in 2008 | Complaint says industrial and consumer goods giant infringed by marketing and selling its toilet cleaning system.

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Scrub Daddy accuses 3M of ‘sponging off’ invention

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