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Chie Kasahara

Chie Kasahara

Atsumi & Sakai


Chie, a Japanese-qualified attorney (Bengoshi) of some 20 years’ standing, leads the IP, TMT and Lifescience teams at Atsumi & Sakai, and advises many leading non-Japanese and Japanese corporations on protecting their IP rights in a broad range of businesses, including technology, media and retail. Her practice is focused on Intellectual Property, Data Protection, Entertainment, Information Technology, Cross-Border Commercial Transactions and Corporate Law. She has a law degree from Hokkaido University, and an LLM from Hokkaido University, School of Law.

Her recent transactions include advising:

  • a Japanese advertising agency on advertising agreements, disputes, etc.;
  • major Japanese and non-Japanese advertising agencies on the legal and regulatory requirements for TV production and advertising;
  • major telecommunications carriers on telecommunication business and IT issues;
  • a major international social networking service provider on various aspects of its business in Japan, including data protection and privacy issues;
  • the Japanese subsidiary of a major pharmaceutical production company on trademark disputes and brand protection;
  • software development and distribution companies on software licensing;
  • a leading international software developer in copyright infringement (including claiming compensation from infringers);
  • a number of leading fashion brands on protection and enforcement of their IP rights; and
  • a major computer company in relation to data protection in Japan.

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