Josefsson previously served as a senior judge of appeal at the Svea Court of Appeal in Stockholm.
The EPO said the new position is aimed at increasing the efficiency of the Boards of Appeal and enhancing the “perception of their independence”.
President of the EPO, Benoît Battistelli, said: “Carlo Josefsson's arrival in the post of president of the Boards of Appeal is of great importance.”
“From the very outset, the reform has aimed to ensure the boards reinforce their role as a judiciary body and can effectively serve users of a balanced and efficient patent system.”
He added: “We are confident that Josefsson, who has a great deal of experience in judicial and international affairs, will help to ensure the reform delivers the benefits that it was designed to achieve."
The Boards of Appeal are scheduled to be relocated to Haar, Munich, in the summer of 2017.