Hiroyuki Yajima


Hiroyuki Yajima

Mr. Yajima has been engaged in technical translations from German to Japanese, and in particular has knowledge and experience in a large number of translations of general mechanical patent specifications. Since joining the firm, he has been involved in the drafting of the original manuscripts of domestic patent applications, and has worked on foreign language patent applications, as well as the patent prosecution of these applications, and obtaining domestic and overseas rights.


Patent Attorney


Japan Patent Attorneys Association (2014)

Areas of Legal Expertise

Patent and utility model applications, trials and appeals

Areas of Technological Expertise

General mechanical

Professional Experience

2013 – present

Sonderhoff & Einsel, Law and Patent Office

2006 – 2013

S&E Ltd.


2002 – 2004

Tokyo Metropolitan University, Graduate School of Humanities, MA


Japanese, German, English