For nearly three decades, O’Melveny’s team in Japan has been helping clients achieve their business goals. From Japan’s westward drive in the 1980s, to our representation of the world’s leading technology companies in their mergers and acquisitions in Japan, we have handled landmark cases and significant deals, both inbound and outbound, for a wide range of clients.

Our team includes US licensed lawyers and bengoshi (licensed Japanese lawyers), allowing us to advise multinational and Japanese clients on virtually all facets of Japanese and US law. Our Tokyo office is fully integrated with O’Melveny’s global network to provide legal solutions that cross geographic and practice lines. All of our Tokyo lawyers are fluent in Japanese and English, bridging language and cultural divides.

Whether the undertaking is a cross-border acquisition or a complex international arbitration or multijurisdictional litigation matter, our Japan practice gives clients an edge in the competitive global marketplace.


 O’Melveny & Myers gaikokuho kyodojigyo horitsujimusho is the registered office in Japan of O’Melveny & Myers LLP, and operates as a joint enterprise among our U.S. and Japanese licensed attorneys resident in Tokyo as permitted under Article 49 3 of Japan’s Special Measures Law Concerning the Handling of Legal Business by Foreign Lawyers.

Cross-Border M&A

We represent international companies in their Japanese acquisitions and Japanese companies in their international M&A transactions. Read

European and Japanese Financial Institutions

We have advised several major European and Japanese financial institutions in relation to investigations carried out by the UK Financial Conduct Authority and the Hong Kong Securities and Futures Commission. Read

Litigation in Japan

O’Melveny litigates many difference kinds of cases before Japanese courts, ranging from commercial and international disputes, labor, to mass tort litigation against consumer finance companies. Read

Skyworks Solutions, Inc.

O’Melveny acted as lead counsel to Skyworks in its US$148.5 million acquisition of a controlling interest in Panasonic Corporation’s filter technology business for smart phones and other mobile applications. Read

Western Digital Corporation

O’Melveny represented Western Digital in its $4.8 billion acquisition of Hitachi Global Storage Technologies, one of Japan’s largest inbound technology acquisitions. Read