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Yun Cheng

Attorney Cheng practices in a variety of areas with Lion’s Law. He represents corporate and individual clients in civil and commercial litigations. He assists clients with various legal issues involving breach of contract, landlord & tenant disputes in both residential and commercial leases, misrepresentation, breach of fiduciary duties, defamation, wrongful termination, and the Massachusetts Consumer Protection Act Chapter 93A. His skill set and experience in legal research, motion drafting, deposition, and oral argument enables him to successfully defend his clients’ rights through both litigation and settlement. 

Phone: 617-682-7105



  • Attorney Cheng’s practice areas also include intellectual property (IP) law, corporate law, and employment law. He has represented clients in front of the USPTO on different intellectual property matters, including trademark registration, trademark consultations, trademark prosecutions, copyright infringement actions, and copyright licensing.

  • He drafts, reviews and negotiates the terms of the commercial leases. He is also experienced in assisting clients to incorporate their businesses and draft corporate documents. In addition, he addressed employer’s needs in employment offer, employment agreement, handbook, assignment of intellectual property, trade secrets, non-solicitation, non-compete, and wage and hour issue. 

  • Attorney Cheng has advised clients on organizing multiple 501(c)(3) nonprofit organizations. His clients are in industries in technology, biopharma and life science, sports, education, exports and imports, athletic clubs, food services, childcare services and real estate brokerage.

  • Prior to joining Lion's Law, Attorney Cheng practiced law at The Kasen Law Firm in New York City, Boston Municipal Court, and King & Capital Law firm in Beijing, China. He advocates for client rigorously by infusing his attention to details and strong analytical skills with a highly individualized approach and a goal to win.

Bar Admission and Affiliation

  • Massachusetts

  • U.S. District Court for the District of Massachusetts

  • Boston Bar Association


  • L.L.M. Banking & Financial Law, Boston University School of Law

  • Juris Doctor, Suffolk University Law School

  • Bachelor of Arts in Psychology and Minor in Economics, Boston University

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