Akinori Ohta

Mr. Ohta has been engaged for over a decade in a broad range of patent areas such as applications, prosecutions, consultations, expert opinions as well as revocations of appeal decisions. Moreover, based on his experience in handling a large number of outbound and inbound patent applications in several languages, Mr. Ohta provides advice to many global and international clients.


Patent Attorney


Qualified IP Litigator in Japan (2006)
Japan Patent Attorneys Association (2003)

Areas of Legal Expertise

Patent and utility model applications, trials and appeals, expert opinions, and litigation

Areas of Technological Expertise

General chemistry and semiconductor-related fields

Professional Experience

2014 – present

Sonderhoff & Einsel, Law and Patent Office

2001 – 2014

Wakabayashi Patent Agency

1995 – 2001

Japan Tobacco Inc.


1993 – 1995

Tokyo Institute of Technology, Graduate school of engineering, MSc

1989 – 1993

Tokyo Institute of Technology, Chemical engineering


Japanese, English