John Sun is a member of the Intellectual Property practice group with a focus on patent law. A former IT business systems analyst, he has an incredible depth of knowledge related to software development that guides him in his practice and makes him a great asset to his clients. He is also knowledgeable regarding artificial intelligence (AI).

A former law clerk for the U.S. International Trade Commission, John has extensive experience with patents related to electrical technologies.

John is proficient in various programming languages, including Java, C++, C, JavaScript, HTML, SQL and PL/SQL. He is a Sun Certified Developer and Sun Certified Programmer for the Java 2 Platform. An avid learner, John is furthering his education and currently pursuing coursework in AI programming and machine learning.

John is also a native speaker of Mandarin Chinese.

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Prior to joining the firm, John gained invaluable experience as a law clerk for the U.S. International Trade Commission. Having worked for both the Office of Unfair Import Investigations and the Office of General Counsel, John’s diverse experience includes drafting legal memoranda on issues arising from investigations, such as inter partes review estoppel; drafting claim construction briefs and presentations for motion for summary determination hearings; reviewing complaints; and drafting legal memoranda on whether to institute section 337 investigations.

He also has previous experience as a law clerk for the Office of the Public Defender in Maryland and as lead business systems analyst for the American College of Cardiology in Washington, D.C. Prior to that, he spent over 12 years as a software developer and business systems analyst first for a major investment advisor and then for a multinational financial services company.


  • University of Maryland School of Law  (J.D., 2019)
    • 2018 Philip C. Jessup International Law Moot Court Competition
    • Maryland Intellectual Property Student Association
    • American Intellectual Property Law Association (Student member)
  • Stevens Institute of Technology  (M.S., B.S., 2000)
    • Computer Science


  • District of Columbia
  • U.S. Patent and Trademark Office

Charitable and Civic Involvement

  • Capital Area Immigrants’ Rights (CAIR) Coalition (Volunteer, 2016)


  • Mandarin Chinese
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