The customs heads of Japan, China and South Korea agreed Wednesday to set up a tripartite working group to study measures to enhance the protection of intellectual property rights at borders, the Japan Customs said.

The agreement came at a meeting in Tokyo of the three customs chiefs -- Yukiyasu Aoyama, director general of the Finance Ministry's Customs and Tariff Bureau in Tokyo, Minister Mu Xinsheng of China's General Administration of Customs, and Commissioner Yun Kap Seong of the (South) Korean Customs Service -- amid Japan's successive bans on imports of goods infringing on the rights.