Peter J. Guffin

Peter J. Guffin


Pierce Atwood LLP

Recognized since 2014

Portland, Maine

Practice Areas

Copyright Law

Litigation - Intellectual Property

Lawyer of the Year Badge - 2025 - Litigation - Intellectual Property
Lawyer of the Year Badge - 2025 - Litigation - Intellectual Property Lawyer of the Year Badge - 2015 - Trademark Law
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Peter Guffin is chair of Pierce Atwood’s Privacy & Data Security practice. A long-time partner and now of counsel at the firm, Peter focuses his practice in the areas of information privacy and cybersecurity law, drawing on his extensive experience in the areas of intellectual property, the internet, and information technology.

Peter regularly advises clients with respect to regulatory compliance issues, risk management, governance, and data security incidents, including internal forensic investigations, data breach notification obligations, regulatory investigations and enforcement, risk mitigation, and litigation strategies.

Peter represents businesses and organizations across a wide range of industry sectors, including health care, information technology, education, energy, banking, financial services, insurance, and retail.

Contact & Links
Location
  • Merrill's Wharf
    254 Commercial Street
    Portland, ME 04101
Education
  • University of Pennsylvania, J.D., graduated 1981
  • Rutgers, The State University of New Jersey, B.A., magna cum laude, Phi Beta Kappa
Bar Admissions
  • United States, Maine
  • United States, Massachusetts
Affiliations
  • Judicial Branch Task Force on Transparency and Privacy in Court Records (2017-2018) - Member
  • Northern New England KnowledgeNet, International Association of Privacy Professionals - Co-founder; Co-chair (2014-2018)
  • University of Maine School of Law - Visiting Professor of Practice; Co-director, Information Privacy Law Program

Pierce Atwood LLP
Headquarters: Portland, Maine

64 The Best Lawyers in America® awards

14 Best Lawyers: Ones to Watch® in America awards

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Lawyer of the Year Badge - 2025 - Litigation - Intellectual Property Lawyer of the Year Badge - 2015 - Trademark Law
Named "Lawyer of the Year" by Best Lawyers® for:
  • Litigation - Intellectual Property, Portland, ME (2025)
  • Trademark Law, Portland, ME (2015)
Recognized in The Best Lawyers in America® 2025 for work in:
  • Copyright Law
  • Litigation - Intellectual Property
Special Focus:
  • Licensing
  • Open-Source Software
  • Software
Awards:
  • Certified Information Privacy Professional (CIPP/US, CIPP/E), International Association of Privacy Professionals.
  • Distinguished Fellow, Ponemon Institute, in recognition of service, commitment, and leadership to the advancement of responsible information management practices in business and government.
  • Listed in The Best Lawyers in America® for Copyright Law and Intellectual Property Litigation (2014-present)
  • Recipient of Maine Judicial Branch 2018 "Outstanding Volunteer of the Year" Award
  • Selected as arbitrator for EU-US Privacy Shield Program by the US Department of Commerce and EU Commission.
Additional Areas of Practice:
  • Information Technology Law
  • Litigation - Patent
  • Patent Law
  • Privacy and Data Security Law
  • Trademark Law

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Publications

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