弁理士法人はなぶさ特許商標事務所のロゴ

PROFILE

加藤

GREETING FROM MANAGING PARTNER TSUTOMU KATO

Our firm’s name, “Hanabusa” means the calyx of a flower, the part of a flower that supports the petals from below. Like a calyx, we strive to acquire and protect the rights of our clients’ intellectual properties, and, in doing so, we help to make our clients more attractive to potential customers. We also strive to uphold the interests of our clients by acting on their behalf on the front lines in any disputes over intellectual property rights.

HANABUSA PATENT & TRADEMARK OFFICE
AIMS TO BE YOUR BEST PARTNER.

Today, Japan’s industries are entering an era of major structural change in every field.
Even large companies need to adapt to remain profitable. Without changing their traditional business models, they risk being left behind.
Small and medium-sized enterprises also need to adapt as they strive to succeed by exploring previously untouched business opportunities. Similarly, when venture companies seek to establish new industrial models in new business fields, they need to survive wave after wave of competitors.

We, the Hanabusa Patent & Trademark Office, are an organization whose slogan is “For Others.”
Regardless of the size and popularity of their companies, we assist our clients in any intellectual property-related tasks with which their handling might be insufficient, work with them to obtain intellectual property rights, and prevent any acts that infringe on their rights.

We diligently assist our clients in litigation, harnessing our experience working with a variety of law firms.
Furthermore, we have relationships with foreign patent firms in more than 100 countries and can provide appropriate advice to our clients on issues and concerns regarding their intellectual properties overseas.
We will continue to be guided by the spirit of working “For Others.”

KEY COMPANY INFORMATION

OFFICE NAME
PATENT ATTORNEY CORPORATION HANABUSA PATENT & TRADEMARK OFFICE
TEL
03-5801-6531
MANAGING PARTNER
Tsutomu Kato
ESTABLISHMENT
1955 (Year 30 of the Showa Era)
STAFF MEMBERS
About 45
LOCATION
4th Floor, SRD Bldg., 2-9 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan

JR Chuo-line or JR Sobu-line: 7-minute walk from the Ochanomizubashi Entrance of JR Ochanomizu Station
Tokyo Metro Jimbocho Station (A5 Exit): 6-minute walk

OUR HISTORY

１９５５
Masami Hanabusa establishes the Hanabusa Patent Office at Baji Kaikan and publishes “Studies on Law of Intellectual Property” at the Hanabusa Institute for the Protection of Industrial Property.
Subsequently, Hanabusa Patent Office moves to the 2nd and 3rd floors of the Ochanomizu Square Building B.
１９９１
After the death of our founder, Tsuneo Hanabusa takes over the business of Hanabusa Patent Office and continues to publish “Studies on Law of Intellectual Property.”
２００２
Hanabusa Patent Office moves to the 5th floor of the Shin-Ochanomizu Urban Trinity Building.
２０１４
Hanabusa Patent Office changes from a sole proprietor to a corporate organization (Managing Partner: Tsuneo Hanabusa) and changes its name to “Patent Attorney Corporation Hanabusa Patent & Trademark Office.”
２０１６
Tsutomu Kato becomes the managing partner of Patent Attorney Corporation Hanabusa Patent & Trademark Office.
２０２４
Patent Attorney Corporation Hanabusa Patent & Trademark Office moves to the 4th floor of the SRD Building, its current premises.