John-Mark Turner - Manchester, NH
Attorney at Sheehan Phinney
Business Litigation Lawyers in Manchester, NH
1000 Elm Street 17th Floor Manchester, NH 03101
- 1 Super Lawyers®
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23
Years
Experience
Manchester Business Litigation Lawyer
Updated: 03/10/2026
Areas of Practice
- Business Litigation
- Appellate Litigation
Attorney Information
Overview
John-Mark is a business litigator with an emphasis on complex, high-stakes cases. He specializes in class actions, intellectual property litigation, and appellate work, and also has substantial experience in ERISA defense, securities/corporate litigation, and commercial real estate disputes.
He has a long track record of success representing a wide variety of industries and clients including manufacturers, software developers, insurers, schools and universities, professional practices, and online retailers. In addition, John-Mark regularly acts as Special Counsel to the State of New Hampshire. Among other matters, he successfully defended the Pease Tradeport in Town of Newington v. State, 162 N.H. 745 (Supreme Ct. 2011), and was lead counsel in Amanda D. Governor, a class action suit brought in 2012 challenging the State’s community mental health system that was settled in 2014.
Prior to joining the firm, John-Mark served as law clerk to the Hon. Michael Murphy, Circuit Judge for the United States Court of Appeals for the Tenth Circuit. While in law school, John-Mark was an Executive Editor for the California Law Review.
Awards and Honors
Honors
- New England Super Lawyer, Business Litigation, since 2009
Other Sources of Feedback About John-Mark Turner
Included on the 2017 New England Super Lawyers list
Past Lists
- 2016 New England Super Lawyers list
- 2015 New England Super Lawyers list
- 2014 New England Super Lawyers list
- 2013 New England Super Lawyers list
- 2012 New England Super Lawyers list
- 2011 New England Super Lawyers list
- 2010 New England Super Lawyers list
- 2009 New England Super Lawyers list
Education
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Legal Education
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University of California, Berkeley, School of Law,
Berkeley,
California
J.D.
Law Review: California Law Review, Executive Editor
-
University of California, Berkeley, School of Law,
Berkeley,
California
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Non Legal Education
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University of South Carolina
B.S.
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University of South Carolina
Current Employment Position(s)
-
Shareholder
Past Positions
- Hon. Michael Murphy, Circuit Judge for the United States Court of Appeals for the Tenth Circuit, Law Clerk
Pro Bono Activities
- Board of Directors of the Farnum Center, a treatment center for individuals dealing with alcohol and substance abuse
Representative Cases
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Control Solutions, Inc. v. MicroDAQ.com, Inc., 2015 WL 5092593 (D. Oregon 2015): dismissal in favor of defendant accused of trademark infringement through use of Google AdWords
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Passatempo v. McMenimen, 86 Mass. App. Ct. 742 (Mass. Appeals Ct. 2014): upholding large jury verdict against insurance company whose agent defrauded insured
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Starbucks Corporation v. Wolfe’s Borough Coffee, Inc.,736 F.3d 198 (2d Cir. 2013): judgment for defendant accused by Starbucks of trademark infringement, dilution, and unfair competition.
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Achille v. Achille, 117 A.3d 1144 (N.H. Supreme Ct. 2015): upholding trial court restraining order in multi-million dollar divorce case.
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Kimball Union Academy v. Genovesi, 165 N.H. 132 (N.H. Supreme Ct. 2013): upholding jurisdiction against engineer sued for professional negligence.
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Town of Newington v. State, 162 N.H. 745 (N.H. Supreme Ct. 2011): affirming judgment for State authority sued by municipality over wetlands zoning regulations
Published Works
Articles
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Who is Liable for Overweight Truck Fines?
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Software Developers Need to Check Their Insurance Policies
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Supreme Court At-a-Glance
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After a Recent New Hampshire Supreme Court Decision, Businesses Should Take Another Look at Their Commission Agreements With Their Sales Forces
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Physician – Hospital Ambulatory Surgery Center: A Compliance Guide – Part 1
- When your AdWords keywords land you in court
Bar Admissions
- New Hampshire
- U.S. Tax Court
- U.S. Court of Appeals 1st Circuit
- U.S. Court of Appeals 2nd Circuit
Photo
Contact
1000 Elm Street
17th Floor
Manchester, NH 03101
Phone: 603-945-9922
Fax: 603-627-8121
Email: Send a message
Website: https://www.sheehan.com/
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