SmileDirectClub Sued by Candid Care in Expanded Patent Fight

SmileDirectClub was sued Tuesday by rival Candid Care, expanding a legal fight over patents related to SDC’s business model for selling teeth-straightening products direct to consumers.

• Candid asked a judge to preclude SDC from making an infringement claim over a patent Candid says is essentially the same as one already ruled invalid, according to complaint filed Tuesday in federal court in Wilmington, Delaware
• Patent, issued Tuesday, relates to SDC’s retail concept and process through which it develops plastic aligners for customers
• Delaware judge last December invalidated patent in same family as newly issued one for being too abstract and ...