HIBIKI (Formerly, IEIRI & Associates ) is a Yokohama* based international IP law firm with experience in protecting its clients' intellectual property in Japan.
*Yokohama is mere 25 minutes from Tokyo by train (See Access page).

HIBIKI has 36 patent attorneys and 79 staff professionals.

Large multinational companies, like Toyota, NEC, JVC Kenwood, Renesas Electronics and Xiaomi as well as startup companies rely on our firm to obtain and protect their intellectual property.

Since our establishment of 2001, we have been dedicated to building long-standing client relationships that are productive, professional and collegial. As a result, HIBIKI has grown and established itself as a leading firm who handles 1600+ patent, utility model, design and trademark applications in Japan and 350+ families in many countries every year.

HIBIKI provides patent prosecution services in Japan. Our patent attorneys have not only legal and technical backgrounds but also know-how to produce truly effective patents covering future competitor's products. HIBIKI can maximize our clients' benefit by obtaining truly effective patents. We cover broad technical areas.

HIBIKI provides trademark prosecution services in Japan. Our attorneys assist in establishing trademark rights, prosecute trademark applications, and advise on the enforcement of these rights.

HIBIKI provides legal opinions, litigation and licensing services with regard to all aspects of intellectual property rights. Our patent attorneys have experience in the drafting of legal opinions, the representing of litigations, and the drafting/negotiating of licensing.

HIBIKI provides prior art search, specialized in Japanese patents and non-patent literatures, in broad technical areas with deliverables in English. As patent attorneys and patent engineers with decades of patent prosecution experience, we have accumulated knowledge that enables us both to find the most relevant information and to present it effectively. Depending on your needs, our Japanese translator can also translate the Japanese prior art into English.