Kazuhiko Saoyama

Mr. Saoyama has broad experience in inbound and outbound work, patent applications and prosecutions, drafting expert opinions, and litigation. In particular, he has expertise in the field of electrical and mechanical technology. In the past, Mr. Saoyama worked in the development department of a bearing manufacturing company. He provides intellectual property services and advice to his clients utilizing his experience both as an inventor and a patent attorney.


Patent Attorney


Japan Patent Attorneys Association (2004)

Qualified IP litigator in Japan (2008)

Areas of Legal Expertise

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

Areas of Technological Expertise

Mechanical engineering and electronics, such as computers, mobile phones, communication networks, antennas, image processing, in-vehicle equipment, audio devices, robots, video cameras, digital cameras, navigation systems, user interface, biometrics, security systems, optical disks, broadcasting equipment, printing machines, industrial plants, air conditioning facility systems, valve system, pumps and automobile components

Professional Experience

2015 – 2018, 2020 – present

Sonderhoff & Einsel, Law and Patent Office

2010 – 2015

Yamakawa international Patent Office

1993 – 2010

Tanabe Patent Office

1988 – 1990

NIPPON THOMPSON CO.,LTD (development department)


1994 – 1998

Meiji University, Precision engineering


Japanese, English