Biography

Nathan is a Director in the firm’s Concord, New Hampshire office. His work focuses on complex commercial litigation and government investigations in the construction, health care, insurance, and financial services industries. He frequently represents clients in state and federal courts, as well as before numerous state agencies and the Legislature.

Nathan frequently authors publications and provides presentations on a variety of legal topics in the health care and construction industry, as well as developments in data security and breach notification laws, and the changing legal landscape for cannabis-related businesses. Nathan is also one of the editors – including the Honorable Tina Nadeau, Chief Justice of New Hampshire Superior Court – of the treatise A Practical Guide to Evidence in New Hampshire 2nd Edition (2021).

In recognition of his notable work for clients, Nathan has been named multiple times to the “Under 40 Hot List” by Benchmark Litigation, which recognizes the "nation’s most notable up-and-coming litigation attorneys." This list is compiled through a process of both peer review and case examination.

Nathan is an active member of the community. Nathan was named to the 2021 New Hampshire Union Leader 40 Under Forty list recognizing “outstanding Granite Staters making a difference in their communities and professions.” In December 2020, he was appointed by the New Hampshire Supreme Court to serve a three-year term on the Access to Justice Commission. Nathan currently serves on the New Hampshire Campaign for Legal Services Large Firm Committee. He has served on multiple committees of the New Hampshire Bar Association.  In November 2019, Nathan was elected to a four-year term as an at-large councilor on the Concord City Council.  Previously, he served on the Concord School Board (2015-2018). Nathan also coaches youth baseball and basketball.

During law school, Nathan interned for the United States Department of Justice and The Honorable Mary Ellen Coster Williams at the United States Court of Federal Claims. He was also a member of the law review and national moot court team. After graduation, Nathan practiced law in Washington, D.C., with the international law firm Reed Smith LLP, before returning home to New Hampshire.

Professional Activities

  • New Hampshire Supreme Court, Access to Justice Commission, Member
  • New Hampshire Bar Association, Legislation  Committee, Member

Honors & Recognition

  • Benchmark Litigation - Under 40 Hot List
  • New Hampshire Union Leader - 40 Under Forty

Civic and Charitable Activities

  • Concord City Council, At-Large Councilor
  • Concord School Board, past member
  • Georgetown University Alumni Admissions Program
  • New Hampshire Campaign for Legal Services, Large Firm Committee, Member

Publications

  • A Practical Guide to Evidence in New Hampshire 2nd Edition (2021), Edited by Nathan Fennessy, Hon. Tina Nadeau, Kenneth E. Rubinstein, and Karen A. Schlitzer.
  • "Health Reform Legislation Includes Significant Amendments to the False Claims Act," co-author, Federal Forecaster, Vol. VI, No. 2 (Spring 2010)
  • "The President Signs a Significant Amendment to the Federal False Claims Act," co-author, Financial Fraud Law Report (September 2009)
  • "Sweeping Changes to the Federal False Claims Act Are on the Horizon," co-author, Financial Fraud Law Report (May 2009)
  • "Changes to the Federal False Claims Act Are on the Horizon," co-author, Federal Forecaster, Vol. V, No. 2 (Spring 2009)
  • Comment, "Bringing Bloggers Into the Journalistic Privilege Fold," 55 Catholic Law Review 1059 (Summer 2006)

Firm Highlights

Press Coverage

Maine Center for Public Interest Reporting Wins Public Records Dispute with York County Jail

Press Coverage

Maine Media Organizations Oppose Foreign Electioneering Ban

Question 2 on Maine’s November ballot asserts that corporations owned or controlled by foreign governments do not have the same rights to political speech as companies here in the U.S. and that foreign governments should be prohibited...

News

Matt Warner Named to Cannabis Law Journal Global Top 200 Cannabis Lawyers 2023

Preti Flaherty attorney and Cannabis Business Group member Matt Warner has been named to the list of Global Top 200 Cannabis Lawyers for 2023-2024. A joint publication of  Cannabis Law Report and  Cannabis Law...

Event

2023 Maine Employment Law Summit

For nearly 30 years, Preti Flaherty's Employment Law team has provided Maine employers with practical guidance and best practices at our annual Employment Law Summit. Join us  Thursday, October 5  for the 2023 Employment...

News

Preti Flaherty Litigation Practice Group Adds Four New Attorneys

Preti Flaherty is pleased to announce the addition of four experienced Associates to the firm’s Litigation Practice Group: Stephen Garvey, Michael Hanify, Hanna May, and Tiffany Ottenga. Stephen Garvey is a graduate of Boston...

Publication

131st Maine Legislature End of Session Update

The First Regular Session of the 131st Legislature was expected to end on June 15th or soon after. Instead, the First Regular Session ended on March 30th, and the Governor signed the “continuing services&rdquo...

Publication

Schutz and Harriman Author Article for MLRC on Mill's Veto of Constitutionally Fraught Legislation

In an article for the Media Law Resource Center's July 2023 Media Law Letter,  Preti Flaherty attorneys Sig Schutz and Alex Harriman explore Gov. Janet Mills' recent veto of L.D. 1610, “An Act to Prohibit Campaign Spending...

Publication

How to navigate the legal side of nondisclosure agreements

Preti Flaherty attorney Kristy Abraham has authored an article for  MaineBiz  on navigating the legal side of nondisclosure agreements (NDAs), outlining six questions for organizations to review before entering into a NDA.

News

Jeffrey Talbert Named to American College of Environmental Lawyers

Jeffrey Talbert, Chair of Preti Flaherty’s Environmental Law Group, has been invited to become a Fellow in the distinguished American College of Environmental Lawyers (ACOEL). Membership in the premiere association of environmental lawyers is by...

Publication

Municipal Update: Maine Legislature Acts to Clarify Sales of Tax-Acquired Properties

Early this week, in response to the  United States Supreme Court’s recent decision in  Tyler v. Hennepin County, Minnesota  (598 U.S. (2023)) , the Maine Legislature passed emergency legislation establishing a new process for...