Roger Dubuis is a Swiss watch brand founded by Carlos Dias and Roger Dubuis in 1995. Dubuis is an extremely talented watchmaker who worked for Patek Philippe for 14 years assembling various complications. Meanwhile, Carlos Dias served as a designer for Franck Muller before joining Dubuis to help launch the brand. Roger Dubuis is one of the only three brands in the world, along with Vacheron and Patek Philippe, to have the highly regarded Geneva Seal on their watches. In August of 2008, Richemont purchased 60 percent of the brand. Roger Dubuis’ most popular lines are the Excalibur, Easy Diver and Golden Square collections.