Sean Carnathan Esq

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Complex Commercial and Insurance Coverage Litigation

Experience: 30 years

Business Law, Insurance Claims and Appeals & Appellate

Maine, Massachusetts and New Hampshire

Honoree, Super Lawyer and Best Lawyers in America -- Trusts and Estates Litigation

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Awards 3

Experience 30y

Online & Web 6

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Sean is a partner and founder of the firm, O'Connor, Carnathan and Mack, LLC and focuses his practice in complex business litigation with a particular emphasis on insurance coverage, closely held businesses and trust and estate litigation.

Since 1993, although Massachusetts based, Sean has been litigating cases all over the country, from Texas to Minnesota and from California to Maine. He has tried or arbitrated over 25 cases in the state and federal courts of Connecticut, Delaware, Maine, Massachusetts and New Hampshire.

Sean has secured millions of dollars in recoveries for his clients. He regularly advises corporate executives in transition regarding their employment contracts and non-compete obligations.

Sean represents policyholders in disputes with their insurers. While he has substantial experience in a broad range of industries, Sean has spent years representing financial institutions such as State Street Bank and Trust Company, and investment funds such as Tuckerbrook Alternative Investments and NTV Management. Sean has a deep well of experience in real estate and construction disputes and has also represented the owners and operators of many small, closely held companies.

Sean is a regular commentator on legal issues and has published many articles throughout his career. He is the author of Massachusetts Bad Faith Insurance Litigation. The second edition of his book was published in 2020, and offers a complete guide to bad faith insurance cases under M.G. L. c. 176D. Sean is also a member of the Trial Law Institute and Diversity Law Institute of the Litigation Counsel of America. He was recently appointed a neutral at AMANDA ADR, which provides mediation and arbitration services.

Jurisdictions Admitted to Practice

Maine

Maine Board of Overseers of the Bar
Since 1993

Massachusetts

Massachusetts Board of Bar Overseers
Since 1997

New Hampshire

New Hampshire Bar Association
Since 2011

Professional Experience

2004 - Current

O'Connor, Carnathan and Mack, LLC

Founder, Partner

2003 - 2004

Rubin, Hay & Gould

Partner

1998 - 2003

WilmerHale (then Hale and Dorr LLP)

Associate, Junior Partner

Securities Litigation Department

1997 - 1998

Harvard Law School

Ames Fellow

1994 - 1996

Lambert Coffin

Associate

1993 - 1994

Maine Supreme Judicial Court

Law Clerk

Education

1996 - 1997

Harvard Law School

LL.M. (1997) | Intellectual Property

1990 - 1993

University of Maine School of Law

J.D. (1993) | Law

Honors: summa cum laude

1982 - 1986

Bowdoin College

B.A. (1986) | English Literature

Honors: magna cum laude

Awards

year - Sean Carnathan Esq

Honoree

Irish Legal 100

Sean Carnathan Esq

Super Lawyer

Super Lawyers

Best Lawyers in America -- Trusts and Estates Litigation

U.S. News & World Report

Contacts

1 Van de Graaff Dr. Suite 104 Burlington MA 01803 Telephone: (781) 359-9002 Fax: (781) 359-9001

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Sean Carnathan Esq Complex Commercial and Insurance Coverage Litigation

Experience: 30 years

Website: Open

Phone: (781) 359-9002

Location: USA

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Practice Areas

Business Law

Business Contracts, Business Dissolution, Business Finance, Business Formation, Business Litigation, Franchising, Mergers & Acquisitions, Partnership & Shareholder Disputes

Insurance Claims

Bad Faith Insurance, Business Insurance, Disability Insurance, Health Insurance, Life Insurance, Motor Vehicle Insurance, Property Insurance

Appeals & Appellate

Civil Appeals, Federal Appeals

Languages

English

Websites

O'Connor, Carnathan and Mack, LLC

Socials

Justia Profile

Sean Carnathan Esq's Avvo Profile

Sean Carnathan Esq's Lawyers.com Profile