Patek Philippe & Co. is a Swiss watch manufacturer located in  Geneva and the Vallee de Joux.  Polish watchmaker Antoni Patek  started making pocket watches  in 1839 in Geneva, with his fellow Czech  partner  Franciszek Czapek. They separated in 1844, in 1845 Patek joined with the French watchmaker Adrien Philippe. Patek Philippe & Co was founded in 1851.