Patent attorneys & lawyers

Yoshiteru MIZUMOTO

Director, Patent Attorneys (Mechanical and Electrical)

Yoshiteru MIZUMOTO


Yoshiteru Mizumoto is a patent attorney working in the Mechanical & Electrical Department, where he is involved in all types of patent applications, office actions (dealing with reasons for rejection from the Patent Office), domestic patent applications for foreign clients, domestic patent applications for domestic clients, and foreign patent applications for domestic clients. Altogether, he has more than eight years of experience as a patent attorney.

Mr. Mizumoto also handles appeals when patents are rejected, which is also a part of patent application work. In addition, he has worked with lawyers from Asamura Law Offices involving litigation rescinding a trial decision when an appeal was not approved.

In addition to patent applications, Mr. Mizumoto has often provided appraisals to determine if a given product was infringing on a patent. He has also been involved with an invalidation trial where a Japanese company had requested the invalidation of a patent held by a foreign client of Asamura Patent Office which this firm had assisted the client in obtaining. Working alongside firm lawyers during this trial, the patent was successfully maintained after a year-long effort. He was also involved in team running a prior art search aimed at the invalidation of a specific patent.

Mr. Mizumoto is a member of the PCT Committee at Asamura Patent Office.

Mr. Mizumoto's graduation work at Shibaura Institute of Technology was focused on a vibration analysis of space structures (models) using the Rayleigh–Ritz method. After joining Sokkia Co., Ltd., he conducted standard scale length measurement research at the National Research Laboratory of Metrology (now the National Institute of Advanced Industrial Science and Technology), and was involved in the research and development of the technology and related intellectual property management for a 2D coordinates measuring machine. As part of their intellectual property management, Sokkia brought forward an action to ban a company from infringing on a patent owned by them, and Mr. Mizumoto was a member of the litigation team, largely staffed by patent office lawyers and patent attorneys.

After passing the Patent Attorney Examination in 2004, Mr. Mizumoto joined Seiwa Patent & Law in September the following year, learning the basics of the business in the firm's Mechanical Department, including domestic patent applications by foreign clients, domestic patent applications, related office actions, appraisals, etc.

After joining Seiwa, he registered as a patent attorney and became a member of the Japan Patent Attorneys Association (JPAA). In 2006, he served as a member of the JPAA's Publicity Center, where he took part in press conferences. Joining Asamura Patent Office, he served on the Second Patent Committee (2011-2012), both in a subcommittee which looked at examinations of patent applications in English received by the Japan Patent Office (2011) and in a subcommittee that examined issues surrounding Japan's participation in the Patent Law Treaty (2012). In 2013, as the Vice Chairperson of the Second Patent Committee, Mr. Mizumoto has been serving as Chairman of the Fifth Subcommittee, where he compares examinations of the written description requirements for patent applications of the five major regions (Japan, US, Europe, China, and Korea) based on examinations and other standards. In addition to drawing up tables comparing the written description requirements of each region, he clarifies the differences among them and prepares reports based on his findings. Mr. Mizumoto plans to write an article about what needs to be done in order to match the examinations of written description requirements of patent applications in Japan with those of the other four regions. In connection with this, the subcommittee plans to hold meetings with the Examination Standards Office of the Japan Patent Office and with the Japan Intellectual Property Association.

BSc in Mechanical Engineering, Shibaura Institute of Technology, March 1992
MSc in Mechanical Engineering, Shibaura Institute of Technology, March 1994
Professional career
Joined Sokkia Co., Ltd., April 1994
Joined a patent office, September 2005
Entered Asamura Patent Office, p.c., January 2010
Examinations passed
Passed the Patent Attorney Examination:
November 2004
Registration for Patent Attorney:September 2005
Registration Number of Patent Attorney:14002
Mechanical & Electrical Department
Japansese, English
Specialty Fields
General machinery, measuring devices, coordinate measuring machines, packaging containers, engines, actuators, machine tools, stents, hospital waste processing devices, fluid separation devices, degasifiers, radiation therapy equipment, implants, rackets, transfer valves, cardboard, cultivation beds, packaging bands, etc.
FAA Airplane Single- and Multi-Engine Land, 1987
Single-engined aircraft takeoff, 1988
Multi-engined aircraft takeoff, 1990
EIKEN Test in Practical English Proficiency (Grade Pre-1), 2012
Member of the Japan Patent Attorneys Association (JPAA), 2000 - present
Member of the JPAA Publicity Center Committee, 2006
Member of the JPAA Patents Committee, No. 2 Committee, 2011 - 2012
The JPAA Patents Committee, Vice-Chairman of No. 2 Committee, Chairman, No. 5 Subcommittee, 2013 - present
“Intellectual Property These Days, 9: Misappropriate Submissions for Patents in China” FB Lecture Series, (Senken Shimbun), (July 23, 2013)
Running (three times a week), golf (solely hitting), guitar (currently practicing), skiing and snowboarding (sometimes), scuba diving (open water)
With over 19 years' experience in development and intellectual properties. I feel confident in providing the very best service to our clients, working together with our clients to ensure our client's successful applications and rights are always my priority.
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