2000 - 2004
Admitted to the bar (Daiichi Tokyo Bar Association)
Joined Abe, Ikubo&Katayama
2004 - 2005
Councilor’s Office on System Reform, General Affairs Division, General Affairs Department, Japan Patent Office under the Law Concerning the Recruitment of Local Public Entities’ Employees with a Fixed Term in Regular Service
2005 - now
Abe, Ikubo &Katayama (2008-now partner)
Throughout his legal practice at Abe, Ikubo & Katayama, he has involved in patent infringement litigation at Japanese IP courts, invalidation trials at the JPO and cancellation actions of JPO trial decisions at Japanese IP courts.