| Assistant Judge, Osaka District Court (1970-1975) |
| Assistant Judge, Yamagata District Court (1975-1978) |
| Assistant Judge, Tokyo District Court (1978-1980) |
| Judge, Tokyo District Court (1980-1981; 1988-1991; 1994-1999) |
| Judge, Chiba District Court (1981-1983) |
| Judicial Research Official, Supreme Court (1983-1988) |
| Judge, Sendai District Court (1991-1994) |
| Judge, Tokyo High Court (1999; 2003-2005) |
| President, Kushiro District and Family Court (1999-2001) |
| President, Kofu District and Family Court (2001-2003) |
| Judge, Intellectual Property High Court (2005-2007) |
| Chief Judge, Intellectual Property High Court (2007-2010) |
| TMI Associates (Advisor Attorney, 2010-Present) |
