Jones Day welcomes leading lawyer Shogo Asaji to its Intellectual Property Practice in Tokyo

The global law firm Jones Day has announced that Shogo Asaji has joined its Tokyo Office as a partner in the Firm’s Intellectual Property Practice. Mr. Asaji arrives from the Tokyo office of Morrison & Foerster, where he was a partner in the firm’s Intellectual Property Group.

Mr. Asaji’s practice focuses on intellectual property litigation, licensing, and patent analysis in both the United States and Japan. He represents clients in patent infringement litigation before U.S. courts and the International Trade Commission, and in administrative proceedings before the U.S. Patent and Trademark Office. Mr. Asaji has significant experience in contentious matters in Asia, in particular, patent infringement and invalidation proceedings in Japan. Mr. Asaji assists pharmaceutical companies in ANDA cases brought under the Hatch-Waxman Act. He also advises clients with respect to international contract and business disputes. He has experience prosecuting U.S. patent applications in the fields of mechanical and electrical arts. He is bilingual in Japanese and English.

“Shogo adds tremendous patent experience to our team in Japan — one of the largest tech-driven economies in the world, and a well-known venue for contentious IP matters,” said Anthony M. Insogna, global Chair of Jones Day’s Intellectual Property Practice. “Shogo will enable us to better serve our clients in Japan and the needs of our U.S. and European clients in Japan.”

Mr. Asaji also counsels U.S. and European companies with respect to patent matters in Japan, including litigation before the Tokyo District Court and the Customs Office, invalidation proceedings at the Japan Patent Office, IP licensing and purchase negotiations, rendering legal opinions of counsel, and responding to cease and desist and warning letters. He most recently assisted a major U.S. electronics and computer company in the Japanese portion of a global, multi-jurisdictional patent litigation.

“Shogo expands our strong IP capabilities in Tokyo, especially with U.S. patent litigation for our Japanese clients,” said Masatomo Suzuki, Partner-in-Charge of Jones Day’s Tokyo Office. “His technical background and experience with invalidation proceedings and infringement actions will be of terrific value for both our U.S. clients doing business in Japan, as well as Japanese clients with disputes in the U.S. We are excited to have him here.”

Mr. Asaji received a B.S. in mechanical engineering, cum laude, and a B.A. in economics, cum laude, from Tufts University; a M.A. from Johns Hopkins University; a J.D. from American University; and an LL.M. degree with distinction in international and comparative law from Georgetown University Law Center. Mr. Asaji has been named to the Best Lawyers list for Japan in the area of intellectual property since its 2010 edition.

Jones Day’s Intellectual Property Practice has recently added four partners to its group of more than 230 IP lawyers around the globe.


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