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Steven K. Mossey
New York +1 212 841 1243 Download V-card

Steven Mossey represents and counsels clients on a wide variety of complex commercial transactions involving intellectual property, technology, and data. In addition, his practice involves evaluating and advising on intellectual property and technology issues that arise in general corporate transactions such as mergers and acquisitions and advising clients on strategic aspects of intellectual property, including the worldwide procurement, defense, and enforcement of patent rights.

  • A multinational medical device company in its acquisition of technology related to bone reconstruction and regeneration and related patent and know-how license agreements.
  • A legal services provider in connection with a SaaS agreement related to human capital management software.
  • A multinational pharmaceutical company in connection with a royalty monetization transaction.
  • A pharmaceutical company in the acquisition of global development and marketing rights for a drug product and related marketing and supply agreements.
  • A private equity fund in connection with its acquisition of companies providing governance, risk and compliance information services.
  • A global diagnostics company in the acquisition of diagnostics company focused on developing specialized tests for infectious diseases.
  • A multinational pharmaceutical and biopharmaceutical company in its intellectual property license agreement for a biologic product.
  • Tencent Holdings Limited in connection with its acquisition of a majority stake in Supercell for $8.6 billion.
  • A broadcast television network in an application development and music licensing agreement for online streaming music services.

Pro Bono

  • Advised a nonprofit drug research and development organization on issues related to its rights under a patent license agreement with a clinical-stage pharmaceutical company.
  • Negotiated a publishing agreement for a curriculum developed by a non-profit school with programs and support services for students with disabilities. 
  • Advised a nonprofit theater company regarding copyright issues in connection with scripting a new play.
  • Negotiated a web services agreement on behalf of an international non-governmental organization that supports women’s learning initiatives.
  • Advised a non-profit company on issues related to copyright ownership and fair use related to its popular podcasts and blogs.
  • Provided legal advice to individuals appearing pro se in New York Family Court.

Memberships and Affiliations

  • New York State Bar Association, Member

Previous Experience

  • Regularly performed due diligence for a private equity and venture capital firm that invests in commercial-stage healthcare companies
  • Represented a pharmaceutical company in multi-District litigation, through appeal, and in parallel proceedings at the U.S. Patent and Trademark Office, on cases involving methotrexate and auto-injector technology.
  • Drafted and prosecuted patent portfolios worldwide in support of commercial efforts including global licensing and enforcement programs.