Japan

IP STARS Reviews

Patent
Asamura Patent Office

Asamura Patent Office is recommended for patent prosecution matters. Its patent expertise covers technical fields such as mechanical, electrical and chemical. Director Yoshiteru Mizumoto heads the mechanical and electrical department. Other notable practitioners in the department are Takayuki Hatanaka and Katsunori Shirae. Experienced practitioners in the chemical practice include Yochi Inoue, Katuhiko Shimomura and Mikio Kameoka.

Finnegan Henderson Farabow Garrett & Dunner

International law firm Finnegan maintains a solid reputation in IP in this jurisdiction, with strong relationships with Japanese companies in the biotechnology, pharmaceutical and software sectors. Managing partner Naoki Yoshida oversees the Tokyo practice. Another notable practitioner in the practice is Chiaki Kobayashi, whose practice encompasses litigation and prosecution. The Japanese team works with colleagues in the international offices to advise clients on European and US IP law. CSL, Toshiba and Toyota Motor are among the firm's notable clients.

RYUKA IP Law Firm

Ryuka IP Law Firm has a strong practice in the Japanese patent prosecution market. Its patent professionals have academic and industry experience in various areas such as electronics and engineering. Aki Ryuka heads the IP practice. Other notable practitioners include Hideya Akashi, Tadayoshi Higashiyama and Manabu Takata.

Seiwa Patent & Law

Seiwa Patent & Law has expertise in patent disputes and IP transactions. Atsushi Aoki is the president of the firm. Junichi Tsuruta, Kimikazu Ito, Nobuo Sekine, Yoichi Watanabe, Chihiro Minamiyama and Shinji Mitsuhashi are key practitioners in the patent practice. Ito handles patent prosecution work in the fields of mechanical and automobile engineering, while Sekine deals with patent prosecution work in the chemical field. The firm's patent clients include Asahi Kasei, Fujitsu and Novartis.

Shiga International Patent Office

Shiga International Patent Office's IP team is well-regarded in patent prosecution work. Sumio Tanai is the chairman of the firm; he is active in the chemistry, biotechnology and pharmaceutical sectors. Yasuhiko Murayama and Tatsuhiko Abe are notable senior practitioners in the firm. Rising stars to watch are Hiroyuki Hashimoto, Shimpei Kuroda and Fumio Takahashi. They all focus on patent prosecution. In 2018, counsel Norio Takahashi left the firm and Masakazu Kurose joined as patent attorney.

Sugimura & Partners

Sugimura & Partners is well known for its patent prosecution practice. The IP team provides result-oriented solutions and customised services to clients in various sectors such as electronics, industrial manufacturing, chemical and IT. Managing partner Koji Sugimura leads the IP litigation practice while Kazuyuki Tomita is in charge of the patent prosecution practice. Some key patent practitioners are Haruo Awano, Akihito Okura and Yasuyuki Komatsu. Keisuke Kawahara, Yasuyuki Komatsu and Yamato Okano are rising stars to watch in patent prosecution.

Trade mark
Asamura Patent Office

Asamura Patent Office is recommended for trade mark and design right protection. The team assists clients with IP protection in Japan and abroad. Director Hiroko Hirayama leads the trade mark and design department. Senior partners Ryoji Mochizuko and Kazutaka Otsuka advise clients on protection strategy and agreements. Rhodia Chimie is among the firm's clients. During the research period the firm hired Shuji Kikuma.

Finnegan Henderson Farabow Garrett & Dunner

Full-service IP firm Finnegan Henderson Farabow Garrett & Dunner is recommended for soft IP work in this jurisdiction. Its global network allows its team to also get involved in US and European IP instructions. Head of IP Naoki Yoshida is the key contact in Japan.

Hiroe and Associates

Hiroe and Associates has a broad trade mark practice covering trade mark applications, infringement issues and licensing. In addition, the team also assists clients with unfair competition and copyright infringement matters. They have a focus on the pharmaceutical and biotechnological areas.

Takenori Hiroe is the head of IP department, while Masanori Hiroe leads the trade mark and design team.

RYUKA IP Law Firm

Ryuka provides services including trade mark prosecution and filings and clients include domestic and international firms, smaller start-up organisations and individual inventors. The IP team is active in the electronics, telecommunications, software, chemicals and biochemistry areas.

Aki Ryuka is the key contact at firm and assists clients with trade mark, patents and designs. Junior partner Masako Osakabe advises on trade mark prosecution and litigation, unfair competition and design.

Seiwa Patent & Law

Seiwa Patent & Law, advises on prosecution, enforcement and litigation. Atsushi Aoki is president of the firm and also heads the trade mark division with partner Nami Togawa. Minako Mizuno leads the firm's design practice while Yasushige Hagio and Kenji Yamaguchi head the litigation practice.

Sugimura & Partners

Sugimura & Partners advises on patent, design, and trade mark prosecution, trial and appeal proceedings before the JPO, counselling and opinion work, due diligence, unfair competition matters and litigation. Clients range from single inventors, to start-ups, multinational firms and academic institutions.

Key figures include Kenichi Nakayama who specialises in trade mark prosecution, unfair competition and litigation. Hisaya Kadota, a rising star, focuses on trade mark and design work.

Yuasa and Hara

Yuasa and Hara is one of the oldest and largest law firms in Japan. The firm has experienced teams for contentious and non-contentious soft IP matters. A key contact in the firm is Hiromichi Aoki, who advises on trade mark, designs, unfair competition and domain name matters.