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Organizations

“RiZ”Under one brand,
two organizations work together.

Two specialties, one brand

Different expertise,
one matter.

INVENTION & LAW

Riz International Patent Office

A patent office that approaches matters from the perspective of invention and law—identifying the essence of an invention, designing the rights needed, and putting them into practice through specialist patent work.

BUSINESS & ENTERPRISE

Riz Intellectual Property Management Co., Ltd.

A company that approaches matters from the perspective of business and enterprise—working with clients to decide what to protect, what to prioritize and how far to go, then supporting IP decisions and execution.

Riz International Patent Office
Name
Riz Intellectual Property Management Co., Ltd.
September 1, 2026
Opening / establishment date
September 1, 2026
Director / Representative Patent Attorney
Akifumi Inoue
Representative
Representative Director
Naoki Sugai
Deputy Director
Naoki Sugai
Deputy Representative
Vice President
Akifumi Inoue
Invention consultation; specification drafting; domestic and international filings; prosecution; appeals
Primary role
Support for identifying invention and IP themes; support for connecting business and R&D with IP; support for planning IP activity policies; support for planning IP portfolios, budgets and international expansion; training and seminars; IP operations support; patent firm operations support
101-0054
2-9 Kanda-Nishikicho, Chiyoda-ku, Tokyo
Daishin Building 5F, CN-517
Address
101-0054
2-9 Kanda-Nishikicho, Chiyoda-ku, Tokyo
Daishin Building 5F, CN-517

Contract

Contracting

After hearing about your matter, we clearly explain which organization—Riz Intellectual Property Management Co., Ltd. or Riz International Patent Office—will be the contracting party for the support provided.

Confidentiality

Confidentiality

We treat consultation details as confidential. Riz International Patent Office handles such information under the statutory confidentiality obligations applicable to patent attorneys in Japan. Riz Intellectual Property Management Co., Ltd. also handles technical, business and other non-public information appropriately from the consultation stage and can enter into a non-disclosure agreement (NDA) where appropriate.

You do not need to decide which organization to contact before speaking with us.

Contact us

Access

Access

For visits and in-person meetings,Chiyoda Platform Square (Main Building)is our visitor location.

3-21 Kanda-Nishikicho, Chiyoda-ku, Tokyo 101-0054, Japan

VISITOR DESTINATION

Visitor destination

Chiyoda Platform Square (Main Building)
101-0054
3-21 Kanda-Nishikicho, Chiyoda-ku, Tokyo

ROUTE

Nearest stations

  • Takebashi Station — Tokyo Metro Tozai Line2-minute walk from Exit 3b
  • Jimbocho Station — Tokyo Metro Hanzomon Line / Toei Mita & Shinjuku Lines7-minute walk from Exit A9
  • Otemachi Station — Tokyo Metro Marunouchi, Tozai, Chiyoda & Hanzomon Lines / Toei Mita Line8-minute walk from Exit C2b
  • Ogawamachi Station — Toei Shinjuku Line / Awajicho Station — Tokyo Metro Marunouchi Line8-minute walk from Exit B7
  • Kanda Station — JR Yamanote, Keihin-Tohoku & Chuo Rapid Lines8-minute walk from the West Exit
Open in Google Maps

Please contact us in advance of your visit.

JAPAN PATENT OFFICE

To the Japan Patent Office

By trainApprox. 20 min By taxiApprox. 10–15 min

Main Building→ Takebashi Station→ Tozai Line→ Nihombashi StationTransfer→ Ginza Line→ Toranomon Station→ Japan Patent Office

Taxi travel times vary depending on traffic conditions.

BY CAR

Arriving by car

For navigation, set your destination to “Chiyoda Platform Square Main Building, 3-21 Kanda-Nishikicho, Chiyoda-ku, Tokyo.”

There is no permanent visitor parking. Please use the paid coin parking area on the north side of the Main Building (2 spaces) or another paid parking facility nearby.

FROM TOKYO STATION

Taxi from Tokyo Station Approx. 5–10 min

Travel time varies depending on traffic conditions.