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

Accolades

Client satisfaction: Sector knowledge

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.'

Key clients

  • Daio Paper Corporation
  • Cygames

Lawyers

Leading partners: Bengoshi

The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Leading partners: Benrishi

The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Practice head

Eiji Katayama; Hiroshi Kobayashi

Other key lawyers

Junichi Kitahara; Tomohiro Yoneyama; Shimako Kato; Makoto Hattori; Mami Hino