Peter Attia, the embattled longevity expert ousted as a contributor to CBS News over his ties to Jeffrey Epstein, is facing yet another professional hurdle—this time from a health technology company known for its “Oura Ring.” Oura Health Ltd., which manufactures the wildly popular smart ring used to track sleep and physical activity, dragged Attia into court on Friday after filing a counterclaim to his lawsuit against the company. Attia, 52, is one of several prominent figures suing Oura, alleging that the company offered them stock options in exchange for promoting the product—then went back on its word.