L. Mark Weeks

Senior Counsel

New York

Mark Weeks is a Senior Counsel in Orrick’s M&A and Private Equity Group. He has practiced in New York and Tokyo for more than 30 years and served as office leader of Orrick’s Tokyo office from 2007 to 2017.

He concentrates his practice on mergers and acquisitions, joint ventures, clean technology, life sciences, IT and telecommunications asset transfers, strategic investments, and general corporate representation for U.S., Japanese and other Asian companies.

Mark speaks, reads and writes fluent Japanese.

  • Mark's representative transactions include the following.

    • Assisted a Japanese chemical company in its acquisitions of the plant health business from a leading animal health company.
    • Representation of a Japanese chemical manufacturer in the acquisition of a German insulation systems manufacturer.
    • Assisted Sharp Corporation in its transfer of all interests in its subsidiary, Recurrent Energy LLC to a Canadian solar energy company, Canadian Solar Inc.
    • Assisted Johnson Controls with its acquisition of a 60% interest in Hitachi Appliances’ global HVAC (heating, ventilating, and air conditioning) business and the creation of a global joint venture with Hitachi to develop, manufacture and sell HVAC systems.
    • Assisted U-Shin, a Japan based car parts manufacturer, in its acquisition of a global car access mechanisms business from French company Valeo.
    • Assisted a Japan based global chemical company in its acquisition of a French chemical company through an auction.
    • Assisted a leading U.S. based diversified chemical company in its acquisition of a herbicide, fluthiacet-methyl, which is jointly owned by leading agricultural, pesticide and industrial chemical developers and manufacturers in Japan.
    • Assisted a Japan based global chemical company in its acquisition of the Tebufenozide insecticide business of a wholly owned subsidiary of The Dow Chemical Company.
    • Assisted a Japanese publicly traded chemical company in the sale of its U.S. subsidiary through an auction.
    • Assisted a Japanese publicly traded manufacturer of GPS, sonar and radar devices in its acquisition of a U.S. GPS semiconductor company.
    • Representation of a trading subsidiary of the Toyota group in the $200 million sale of its more than 40 percent equity stake in a global agrochemical company to a group of investors led by Olympus Capital.
    • Representation of a Japanese trading and holding company in the sale of its equity stake in one of the world’s largest privately held crop protection and life sciences companies.
    • Representation of a Japan-based global manufacturer and distributor of food, drinks and seasonings in the negotiation and preparation of global research, development, commercialization and license agreements with Senomyx, a developer of flavor ingredients.
    • Representation of a Japanese bank in connection with the complex financing of the acquisition of a Japanese public company.
    • General representation of a biotech company in connection with M&A licenses and supply, manufacturing, collaboration and research and development agreements.
    • General representation of a Japanese agricultural chemicals company in connection with M&A, joint venture, asset transfer, supply, distribution and license agreements related to its fungicide, pesticide and herbicide businesses.
    • Representation of a Japanese cash management company in connection with the tender offer for a U.S. cash management company.
    • Representation of a Japanese food processing company in connection with the tender offer for a U.S. food processing company.
    • Joint venture between a Japanese company and a U.S. company to create a company to provide identity authentication, credit checks and reports in connection with online business-to-business transactions.
    • Representation of a Japanese retailer as creditor in connection with the reorganization of a large U.S. retail clothing store chain. This included establishing a joint venture to license a trademark in Asia and negotiating the terms of a subordinated note agreement, warrants and a stockholders’ agreement for the new stockholders of the reorganized entity.