Abe, Ikubo & Katayama's practice is well-regarded for its strong capabilities in both IP litigation and procurement, advising clients across the telecoms, electronics, and pharma industries. The practice is co-led by Eiji Katayama whose expertise spans a wide range of corporate and international matters, with a particular emphasis on IP and bankruptcy. Alongside Katayama at the helm is Hiroshi Kobayashi who focuses on patent-related issues, including infringement, licensing and oppositions, particularly within the pharma, biotech, polymer, and agrochemical sectors. Junichi Kitahara specialises in IP-related litigation, representing clients in a variety of domestic and cross-border commercial disputes, with a focus on patent cases. Mami Hino is also a key name.
Legal 500 Editorial commentary
Phone
+81-3-5860-3640
Email
Profile

Profile

Work Department
Legal Department
Position

Partner

Career

[Professional Admission]

Admitted to Daiichi Tokyo Bar (1989)

Admitted to New York Bar (1994)

[Professional Experience]

Abe Ikubo & Katayama (1989 - present)

Languages
Japanese and English
Memberships
AIPPI
Education

LLB, Hitotsubashi University, Faculty of Law (1987)

LLM, New York University School of Law (1993)

Content supplied by Abe, Ikubo & Katayama

Testimonials

Collated independently by Legal 500 research team.

  • ‘What distinguishes this team is their speed of response and exceptionally precise and practical legal analysis. The team is composed of professionals with deep technical expertise across a wide range of fields, enabling them to deliver comprehensive and highly specialised IP services. We find their service quality consistently excellent across all aspects of their practice.'

    ‘Makoto Hattori possesses outstanding expertise in IP law and is highly respected within the firm, particularly by junior colleagues. He has an ongoing commitment to thought leadership and education in the field.'

    'Shimako Kato has a strong background in patent prosecution. She also brings excellent foreign language skills, which has allowed her to maintain strong working relationships with many international clients. Her combined technical knowledge and communication abilities make her a valuable asset.’

    ‘This practice is distinguished by its strong focus on patent litigation, with multiple experienced partners who specialise in this area. They are supported by a team of highly capable associates who consistently deliver high-quality work.’

    ‘This is a highly experienced and trustworthy team that respects the opinions of its clients and provides litigation support accordingly.'

    'One of the key strengths of the practice is the close collaboration between attorneys and patent attorneys, enabling comprehensive and strategic support tailored to each case.'

    ‘One of the qualities we particularly value in the individuals we work with is their prompt responsiveness to client requests and their unwavering dedication to securing the legitimate interests of their clients. This client-focused approach, combined with deep expertise and a collaborative mindset, clearly distinguishes them from competitors.'

    'In particular, Tomohiro Yoneyama is highly regarded for his swift responses and his courteous, reliable manner of addressing client needs. His approach inspires confidence and ensures that even complex matters are handled with precision and care.’

Key clients

  • Daio Paper Corporation Cygames Pocketpair, Inc. Nippon Shinyaku Daisho Japan