In the Boston office of Goodwin, Douglas Kline leverages his extensive experience to support companies in the tech and life sciences, focusing on IP litigation, particularly in patent and false advertising cases. Recent notable examples include the defense of New Balance against allegations from Nike that they had infringed the patents of Nike’s Flyknit textile-technology and the representation of BitSight Technologies in a cybersecurity technology patent and false advertising case against its competitor Black Kite relating to technology assessing third-party cybersecurity risk using externally observable data, which was resolved in February 2025 after the case was dismissed with prejudice.
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Profile

Position

Partner

Career

Doug Kline, a senior partner in Goodwin's IP Litigation group, has more than 30 years of experience representing technology and life science companies involved in intellectual property litigation and other high stakes cases. His practice focuses on patent litigation. He has served as lead trial counsel in intellectual property cases throughout the United States and he has tried numerous cases to verdicts. In addition, he has represented clients in reexamination proceedings, both ex parte and inter partes, and argued before the Patent and Trademark Trial and Appeal Boards.

Mr. Kline has argued frequently before the U.S. Court of Appeals for the Federal Circuit and has briefed or argued cases in other courts of appeal, including the U.S. Supreme Court. He has extensive experience representing clients in arbitration and other private alternative dispute resolution processes. He regularly advises companies, investors and underwriters on IP issues and infringement risks related to enterprise transactions and works with clients to coordinate global patent enforcement and defense strategies.

One of the nation’s leading IP litigators, Mr. Kline has been recognized by publications such as Legal 500 and Chambers USA. Legal 500 recently noted that Goodwin’s IP Litigation group is “led by the ‘exceptionally capable trial and appellate advocate’ Douglas Kline in Boston, "who always possesses a complete command of the technical subject matter.” In addition, Chambers USA states that clients praise Mr. Kline as an “extremely capable advocate.” He receives particular recognition for his effective guidance provided to hi-tech and life sciences clients on patent infringement actions and Patent Trial and Appeal Board (PTAB) post-grant reviews. Clients describe Mr. Kline as “an extremely effective team leader. His personable nature and knowledge are traits that don’t often come together in lawyers.” In addition, his expertise has been cited by publications including The New York Times, The Wall Street Journal and The Boston Globe. He also previously served on Goodwin’s Executive Committee and as Chair of the firm’s IP Litigation practice.

Education

JD, 1990, Suffolk University School of Law (magna cum laude) / BS, Mechanical Engineering, 1984, Tufts University

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Testimonials

Collated independently by Legal 500 research team.

  • ‘Douglas Kline is a truly skilled trial advocate who masters the presentation of complex technical issues in patent litigation extremely effectively.’