Several partner law firms collaborate with B2J to ensure comprehensive and multidisciplinary protection of the interests of Italian clients operating or intending to operate in Japan. The significant structural and procedural differences between the Italian and Japanese legal systems—in terms of normative sources, interpretive principles, administrative practices, and commercial customs—make the involvement of professionals with specific knowledge of Japanese law indispensable.

For this reason, the lawyers affiliated with the B2J network are selected based on vertical expertise in strategic areas such as commercial and corporate law, banking and financial law, international contract law, inheritance law, and cross-border asset management.

The operational coordination and management of professional relationships with partner law firms are entrusted to Studio Legale Gambirasio, located at Viale Monte Nero 17, Milan, which serves as the reference point for integrated legal assistance between Italy and Japan.