Gregory S. "Greg" Clayton

Gordon has counseled clients in the power generation industry for over three decades, assisting private energy generators, banks, and contractors with matters ranging from insurance and warranty claims to crisis management. As a managing director of the alternative energy consulting firm Stratex Energy, he’s well-versed in the waste-to-energy, pulp and paper, biomass, and ethanol industries, as well as more traditional energy sources like oil and natural gas. He is also a Managing Direc...

Jared des Rosiers' practice focuses on complex energy regulatory, infrastructure development and siting, and litigation matters before the Maine Public Utilities Commission (MPUC), the Federal Energy Regulatory Commission (FERC), and state and federal courts around the country. Jared strives to develop a comprehensive strategic plan for success in collaboration with his clients and then to efficiently implement that plan through advocacy, negotiation and creativity. When litigation is necessa...

Brian Rayback focuses his practice on environmental and land use law, with expertise in all aspects of water, air, natural resources, solid waste, and zoning regulation. Brian provides cost-effective, strategic advice on project permitting, enforcement matters, appeals of agency decisions, regulatory compliance, and legislative issues for property developers and owners, trade associations, utilities, construction companies, and industrial and manufacturing facilities. He regularly appears bef...

For nearly 30 years, Alan MacEwan has advised businesses, entrepreneurs and investors on a comprehensive spectrum of corporate matters. Alan focuses on mergers and acquisitions, although he prefers to think of his practice more as “buying and selling companies.” He has successfully negotiated over 100 such transactions ranging from $1 million to $300 million, and combines client-specific expertise with creative problem-solving to deliver on his clients’ transaction objective...

Paul is one of Maine’s go-to trial lawyers for difficult and bet-the-company litigation. Paul provides a unique and effective one-two punch for clients facing the prospect of litigation: combining a deep understanding of how the business world functions with ability to more clearly see the litigation playing field and, therefore, devise and implement winning strategies. As Chambers USA put it in its 2017 Edition of America’s Leading Business Lawyers, “Clients describe him as...

Barbara Wheaton concentrates her legal practice on estate planning, estate and trust administration, charitable giving, and related disciplines. Barbara's clients include high net worth individuals, business owners, family offices, charities and fiduciaries. She represents her clients' interests in probate proceedings involving trustee or executor duties, guardianships, trust administration and reformation, and contested estate administrations. Barbara also works extensively with nonprofit or...

Justin attended Portland schools through high school, graduating from Cheverus in 1989. He then graduated from the University of Vermont in 1993 and the University of Georgia School of Law, magna cum laude, in 1999. Justin served as Clerk for the Honorable Leigh I. Saufley of the Maine Judicial Court as his first job after law school. After working briefly at a general practice firm in Portland, he moved in 2001 to a smaller firm which limited its practice to estate planning and related matte...

Dave Barry is a partner in Pierce Atwood’s Litigation Practice Group. Dave served as the firm’s managing partner from 2016 through 2025. Previously, Dave was chair of the firm’s Litigation Practice Group and chaired the firm’s Government Investigations and White Collar Criminal Defense practice. Dave has managed complex business litigation in federal and state courts and has extensive experience assisting clients with government enforcement and compliance matters invol...

Katie Porter represents private and public employers and helps emerging companies establish and maintain all aspects of their employment policies and practices. She regularly provides advice and counsel to multistate clients on emerging and complex employment issues. Katie conducts workplace investigations and assists the firm’s corporate group on employment aspects of corporate transactions. She also advises independent schools on legal issues impacting students and assists with school...

Erica M. Johanson is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Litigation - Real Estate and Litigation - Trusts and Estates. Erica M., who practices law in Portland, Maine, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Erica M. is held by other top lawyers in the same geographic and legal practice area.