- 2019/10 - 現在 Meiji University Professor
- 2013/09 - 現在 Graduate School of Law,Waseda University, Tokyo, Japan part-time lecturer
- 2010/04 - 現在 Waseda University, Tokyo, Japan School of Social Sciences part-time lecturer
- 2010/04 - 2019/09 Meiji University, Tokyo, Japan School of Information and Communication Associate Professor
- 2012/10 - 2013/08 the Institute of Advanced Legal Studies (IALS), the School of Advanced Study(SAS) of the University of London Researher Postdoc
- 2012/10 - 2013/08 the Institute of Advanced Legal Studies (IALS), the School of Advanced Study(SAS) of the University of London Visiting fellow
- 2011/09 - 2012/08 the Centre for Commercial Law Studies (CCLS), Queen Mary, University of London Visiting Scholar
- 2006/04 - 2012/03 Waseda University Kawaguchi Art School Part-time Lecturer
- 2006/04 - 2010/03 Meiji University, Tokyo, Japan School of Information and Communication Lecturer
- 2003/07 - 2009/03 一般社団法人日本国際知的財産保護協会 国際法制研究室 研究員・ポスドク
- 2003/07 - 2009/03 International Association for the Protection of Intellectual Property visiting fellow
- 2006/04 - 2007/09 J. F. Oberlin University part-time lecturer
- 2003/10 - 2006/03 Graduate School of Law Waseda University, Tokyo, Japan Research Assistant
- 2003/10 - 2006/03 Graduate School of Law Waseda University, Tokyo, Japan Visiting Research Associate
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ALAI JAPAN
, Asian Pacific Copyright Association
, Intellectual Property Association of Japan
, Japan Association of Industrial Property Law
, The Copyright Law Association of Japan