Number of patent applications to the European patent office

Sofia (stolitsa) is the top region by number of patent applications to in Bulgaria. As of 2012, number of patent applications to in Sofia (stolitsa) was 18 units that accounts for 59.43% of Bulgaria's number of patent applications to. The top 5 regions (others are Plovdiv, Gabrovo, Kyustendil, and Dobrich) account for 93.45% of it. Bulgaria's total number of patent applications to was estimated at 30 units in 2012.