Biography

Daniel R. Sonneborn is a director in the firm's Litigation Group, practicing primarily from the firm’s Boston office. His practice areas include professional liability, construction, financial services and commercial litigation. Dan regularly represents medical professionals, attorneys, accountants, small and large businesses, and insurance companies in state and federal courts in Massachusetts, Maine and New Hampshire.  

Dan's practice also focuses on transportation law, representing motor carriers, brokers, freight forwarders, and insurance companies in transportation related matters and litigation, including cargo loss and damage, warehousing, contractual issues, and employment matters.

While at Suffolk University School of Law, Dan served as Managing Editor of the Journal of Health and Biomedical Law. He lives in Medford, Massachusetts with his wife and two children.

Professional Activities

  • Maine State Bar Association
  • New Hampshire State Bar Association
  • Defense Research Institute

Civic and Charitable Activities

  • Pan-Mass Challenge

Publications

  • Co-author, Introduction, A Practical Guide to Understanding RSA 358-A in New Hampshire (MCLE New England, 1st Edition, 2014).

Firm Highlights

News

Preti Flaherty Attorney Benjamin S. Piper Promoted to Partner

Preti Flaherty is pleased to announce that the firm’s partnership has named attorney Benjamin S. Piper as a partner. Ben is a member of the firm's Environmental, Litigation, and Media Law Practice Groups and works...

Publication

WC Alert: Recent Developments from Maine's Workers' Compensation Board

Frank A. Graf, MD, Reappointed to Approved List of § 312 Examiners At the February 11 meeting of the Maine Workers’ Compensation Board, Frank Graf, MD, was reappointed to the list of approved § 312...

Publication

Litigation and Arbitration Venue Provisions in Construction Contracts: When and How They Work

Venue and choice-of-law provisions are fairly standard in construction contacts, but can be overlooked due to their location within a contract. When drafted effectively, these provisions can help limit uncertainty about where and how...

Event

2020 Employment Breakfast Series: Strengthening Your Company's Management of Accommodation Requests

For more than 25 years, Preti Flaherty's Employment Law Group has been keeping clients, business partners, and friends up to date on recent developments in employment law. Join us as we continue that tradition...

Event

2020 Cannabis Law Breakfast - Winter Update

Press Coverage

Maine State Police May Be Spying on You

Police and governments are increasingly turning to new tracking and monitoring methods in their efforts to prevent and record evidence of crimes. A Portland Press Herald investigation examines these expanding law enforcement abilities and the...

Event

2020 Employment Law Series: A Legislative Update for HR Professionals

For more than 25 years, Preti Flaherty's Employment Law Group has been keeping clients, business partners, and friends up to date on recent developments in employment law. Join us as we continue that tradition...

Publication

The Potential of the Blockchain for Asset Protection Planning

While many legal scholars focus on the challenges and complications seemingly inherent to blockchain and cryptocurrency, others look past the fear and see potential. In this article for Cumberland Law Review , Ian Huyett and Brian Quirk...

Press Coverage

Bangor superintendent blocked BDN reporter on Twitter after critical news coverage

In an apparent violation of the First Amendment, Bangor schools superintendent Betsy Webb temporarily blocked a journalist on Twitter following a report that news of a student suicide was announced over the loudspeaker at...

News

Preti Flaherty Welcomes Government Relations Liaison Andrew I. Roth-Wells to the Firm

Preti Flaherty is pleased to announce that Andrew I. Roth-Wells has joined the firm as a Government Relations Liaison. Andrew will help manage legislative and regulatory advocacy efforts for the firm’s Government Affairs Team...