Mr Junichi Kitahara > Abe, Ikubo & Katayama > Tokyo, Japan > Lawyer Profile

Abe, Ikubo & Katayama
Fukuoka Building 9th Floor
2-8-7 Yaesu, Chuo-ku
Tokyo 104-0028

Work Department

Legal Department




[Professional Admission]

Admitted to Daiichi Tokyo Bar (1989)

Admitted to New York Bar (1994)

[Professional Experience]

Abe Ikubo & Katayama (1989 – present)


Japanese and English




LLB, Hitotsubashi University, Faculty of Law (1987)

LLM, New York University School of Law (1993)

Lawyer Rankings

Japan > Dispute resolution: Independent local firms

IP litigation is a key focus for Abe, Ikubo & Katayama, which is dually headed by Eiji Katayama and Hiroshi Kobayashi. The team has recently been engaged in domestic patent infringement suits – for which Nodoka Nakamura is a key contact. Junichi Kitahara is skilled in commercial disputes, while Makoto Hattori caters to trade secret litigation. Tomohiro Yoneyama regularly assists clients with counterfeit issues, and Shoichiro Kajinami is especially strong in clean energy mandates.

Japan > Intellectual property: Independent local firms

(Leading individuals: Bengoshi)

Junichi KitaharaAbe, Ikubo & Katayama

Boasting a highly experienced team of litigators and patent lawyers, Abe, Ikubo & Katayama offers expertise in both IP infringement litigation and procurement, with a strong knowledge of the pharmaceutical industry. The team is co-led by Eiji Katayama, an expert on patent litigation, and Hiroshi Kobayashi, whose experience in the chemical and pharma sectors has led to further development and client acquisition in the area of patent prosecution. They are joined by Junichi Kitahara, who strengthens the practice with his impressive track record of patent enforcement along with Makoto Hattori, who focuses on patent and trade secret litigation. Lastly, Mami Hino‘s practice focuses on patent invalidity trials and IP High Court appeals.