David K Pinsonneault Attorney at Law of Winer and Bennett

David K. Pinsonneault

Practice Areas:

  • Civil Trial Practice & Dispute Resolution
  • Environmental Law

Professional Experience

Dave has been privileged to represent a diverse group of clients in complex civil disputes for nearly 40 years. He has done so successfully because he continues to believe in fair fights and just results. Dave has represented publicly traded and closely-held corporations, as well as family‐owned and not for profit companies. He has handled disputes involving environmental, class action, insurance, commercial landlord & tenant, sex abuse and officer & director malfeasance matters in addition to probate disputes and creditors’ claims in the Bankruptcy Court. Dave also counsels clients on various business matters including management buyouts and sale of interests in closely held companies. He has been given the highest peer review rating (“AV”) by Martindale Hubbell.

Bar Admissions

  • New Hampshire State Courts
  • United States District Court for the District of New Hampshire
  • United States Court of Appeals for the First Circuit
  • United States Court of Appeals for the Federal Circuit
  • United States Claims Court
  • United States Supreme Court


  • B.A., Saint Anselm College, 1973
  • J.D., University of New Hampshire Law School (formerly Franklin Pierce Law Center), 1977
  • Certificate in Licensing, Centre D’Études Internationales de la Propriété Industrielles, University of Strasbourg, 1976

Professional/Civic Activities

  • New Hampshire Bar Association
  • Nashua Bar Association (President, 1995)
  • Trustee and Secretary, Nashua Public Library (1986 to present)
  • Past Chairman, Nashua Catholic Regional School System

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