Diamond Offshore Drilling, Inc. v. Diamond Wind North America, LLC

  1. May 11, 2023

    Mitsubishi Unit Asks To Cut Infringement Claim From TM Suit

    A Mitsubishi unit doing business as Diamond Offshore Wind has asked a Delaware federal judge to toss a trademark infringement claim by Houston-based Diamond Offshore Drilling, while also asserting a counterclaim to cancel or restrict the company's federal trademark registration.

  2. April 19, 2023

    Offshore Drilling Co. Sues Mitsubishi Corp. Unit In TM Dispute

    Houston-based Diamond Offshore Drilling Inc. is suing a Mitsubishi Corp. wind energy unit, claiming the company is infringing on the "Diamond Offshore" name and mark it adopted several decades ago.