Intellectual Property Protection and Disputes

Atsumi & Sakai’s intellectual property team is led by partners recognized by independent commentators as leading practitioners in the field, who have significant experience in advising both claimants and defendants in domestic and cross-border IP disputes, including in connection with:

Infringement of intellectual property rights (patent rights, utility model rights, trademark rights, design rights, breeders’ rights and copyrights)
Violations of the Unfair Competition Prevention Act (confusion regarding products, imitation, damage to business and infringement of trade secrets)
Patent Office proceedings (objection to or invalidation of patents, trademarks and designs, revocation of a trial decision, employee inventions)
Recovery of patent rights, utility model rights and design rights
Counterfeiting petition
Injunctions
Joint development, licensing, system development and domain names
Opinions regarding infringement and validity of intellectual property rights

When advising foreign clients, our firm can field a team of expert Japanese lawyers and foreign lawyers who have relevant experience and bi-cultural sensitivity. Our team can do business and draft documents in Japanese, English, German, Mandarin, Hindi, Korean, and Marathi, and provides services around the clock through our global affiliated offices.

Related Practices

Related Publications

“Patent Application and Enforcement of Patent Right regarding AI Related Technology Inventions,” Monthly Patent July 2019
“Arguments Available to Defendants in Japanese Patent Litigation (3) – Specific Defense in Calculation of Damages” Business Lawyers IP / Entertainment Law Q&A (January 2019)
“Arguments Available to Defendants in Japanese Patent Litigation (2) – Defense” Business Lawyers IP / Entertainment Law Q&A (January 2019)
“Arguments Available to Defendants in Japanese Patent Litigation (1) – Denial of Cause of Infringement” Business Lawyers IP / Entertainment Law Q&A (January 2019)
“What Is the Recourse Against a Third Party Which Exploits Patented Inventions?” Business Lawyers IP / Entertainment Law Q&A (September 2018)
“What is the Recourse Available to Resolve Patent Infringement Disputes?” Business Lawyers IP / Entertainment Law Q&A (September 2018)
“What is a Re-Defense Based on Correction?” Business Lawyers IP / Entertainment Law Q&A (May 2018)
“What is a Patent Invalidity Defense?” Business Lawyers IP / Entertainment Law Q&A (May 2018)
“Recourse Available against a Usurp Patent Application” Business Lawyers IP / Entertainment Law Q&A (March 2018)