John D. Patterson, Jr.

Partner - Boston

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617.832.7000 Download vCard

John Patterson has extensive experience in a wide range of business transactions, including mergers and acquisitions, public and private financings and intellectual property licensing. He also represents U.S. and foreign clients in cross border transactions, including mergers and acquisitions, financings, distribution arrangements and the migrations of companies to and from the U.S.

John's practice emphasizes representation of private and public high technology companies, venture capital funds, financial investors and public interest organizations. He counsels clients in private placements and public offerings, mergers and acquisitions and licensing and partnering transactions.

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  • Harvard Law School, LL.B.
  • The Johns Hopkins University, A.B.



Representative Experience

  • Represented RealHealthData, a technology company focused on providing unique, real world data insights, in the sale of substantially all of its assets to Amplity.
  • Represented OnShape Inc., creators of the first Software as a Service (SaaS) product development platform that unites robust computer aided design (CAD) with powerful data management and collaboration tools, in signing a definitive agreement to sell the business to global technology company PTC Inc. for approximately $470 million. 
  • Represented Recorded Future, a threat intelligence company, in its sale of a controlling interest in the company valued at $780 million to Insight Partners. 
  • Sale of Exa Corporation to French software company Dassault 
  • Sale of Art Technology Group, Inc. to Oracle
  • IPO of Exa Corporation
  • Venture financings representing technology companies and venture capital investors


  • Ranked by CHAMBERS USA: AMERICA'S LEADING LAWYERS FOR BUSINESS as one of Massachusetts' leading Corporate/M&A attorneys (2015-2022)


  • Boston Bar Association, Member
  • American Bar Association, Member
  • Served with the Peace Corps in Chad, Africa
  • Served as Chairman of the Board of the Kodaly Center of America
  • Harvard Business School Plan Competition - Firm liaison and Judge
  • Served as an officer or Trustee of various charitable or governmental organizations
  • Celebrity Series of Boston, Director
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  • Massachusetts