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CEO Yoshinori Matsumoto

From proposing search plans based on direct hearing with in-house engineers to advising on building IP strategy including establishing relationship with attorneys, Logic Meister has supporting companies since its foundation in 2001.

We are not just a patent service firm but rather “outside IP division of your company”.



Our founding members are composed of the IP experts and experienced engineers in machine, semiconductor and software manufacturer.

From that time, there was connection with the people involved in various industries.

Here is the story I often heard at network events from those people.


“The more our products are sold, the more IP issues emerge.

As we do not have in-house IP experts in the company, people in charge of general affairs and engineers are forced to handle these matters. This is a huge problem.”

“We can seek legal advice for lawyers and patent attorneys, but they cannot give us advice on how to arrange work within the company.

We need guidance from experts who can fully understand the company.”


Meanwhile companies can expand a patent division when they have a number of challenges related to their IP assets, and they can downsize the division once their technology matures and they file less patent applications.


As a result, some companies fail to determine whether to file patent applications in terms of cost effectiveness.

Some wildly file a number of applications, and some fail to file necessary applications in the particular technology field due to a lack of communication between its patent division and engineers.

Given that situation, I thought it would be helpful for those companies if I could work for them as an ‘outside’ work-ready member of the patent division providing advice anytime they need.


We provide solutions to maximize value of your IP assets focusing on searches but also utilizing our various experiences in product design development, litigation, R&D-IP liaison, licensing negotiations.


 ISO 27001 certified

Logic Meister Osaka Office’s information security management system (ISMS) has been awarded the internationally recognized certificate ISO27001.

As a company dealing with highly-confidential information, we recognize our information management as a key task and work continuously to ensure that we meet requirements in a demanding industry.



IS 655304 / ISO 27001

Read more about our ISMS here.

Company Information

Company name Logic Meister Inc.

Shin-Osaka Grand Bldg. 10F

2-14-14 Miyahara, Yodogawa-ku, Osaka-shi  532-0003

TEL +81 6-7222-0765
FAX +81 6-6350-6585

- Patent search in Japan, China and other countries

- Foreign IP application filing support

- Translation

- IP strategies

- Patent-related information gathering(e.g. Filing rate, tax, litigations etc)

CEO Yoshinori Matsumoto

374 (including 179 attorneys and patent agents)


2001 Founded Patent Works LLC at Osaka
2010 Renamed to LOGIC MEISTER Inc.
2018 Formed MEISTER GROUP in partnership with overseas law firms and patent offices
2022 Headquarters moved to Shin-Osaka Grand Bldg.


Shin-Osaka Grand Bldg. 10F
2-14-14 Miyahara, Yodogawa-ku, Osaka-shi 532-0003

[From Stations]
9-min walk from JR Shin-Osaka stn.
4-min walk from Midosuji Line Higashi-Mikuni stn.


Logic Meister Inc. collaborate with patent laws firms both in and outside of Japan as “Meister Group” team.

We share a goal to provide the best solution/service for clients.

With collaboration by the team members we realize full support in all stages from filing to issuance.

Patent Law Firms in other countries

United IP Counselors, LLC / United GIPs

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