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Business, Trademark, and Estate Planning Law

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THE LAW FIRM OF MARK J. GUAY, P.C., represents business owners locally, nationally and worldwide in a variety of industries, including e-commerce, marketing, high-technology, and manufacturing. We work with companies in all stages of transformation: start-ups, turnarounds, exit strategies, accelerated growth, and transformative change. Contact our office by e-mail or call 978-465-5333 to discuss how we can help you enjoy success.

Mark J. Guay, PC is a member of the Green Business Network™ Leadership Forum and is the only Massachusetts law firm that is a Green America approved business.

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Business Is a Team Sport

For more than 25 years, Attorney Mark Guay has helped clients take strategic proactive approaches to their business needs. In his experience, he has seen too many businesses try to self-diagnose solutions to their problems, resulting in overemphasizing management and under-emphasizing leadership. This approach is more about control push rather than stewardship pull.

As your company's lawyer, Attorney Guay sees his role as one of your team players. He facilitates problem solving with you, by using a multi-step process to create change, as well as overcome technical and adaptive challenges to shape your future strategy.

Our Success Is Based on Your Success

In order for us to be successful, we need to make you successful. Our firm has the knowledge and experience in business and technology to provide the resources and counsel you need in the following practice areas:

Contact Our Essex County Law Firm

Our office is conveniently located in downtown Newburyport, Massachusetts, just one block from Market Square on the corner of Middle Street and Center Street. We are available to meet with you Monday through Friday from 9-5 and evenings and weekends by appointment. Contact us by e-mail or call 978-465-5333 to discuss how we can assist you with collaboration, facilitation or strategic planning. We offer a free initial telephone consultation and accept credit cards.

Location of Law Office


Contact Information

Mark J. Guay, P.C.
24 Center Street
Newburyport, MA 01950
Phone: 978-465-5333 | Fax: 978-499-0074
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Our practice serves as a resource for you and your business. We are experts in the fields of critical thinking, decision making, tax planning, getting your business back on track, fail-over planning, digital rights management, intellectual property, dot com planning and strategies, and doing business as a profitable entity. We are your business partner for creating a symmetrical business strategy for success!

At the law offices of Mark J. Guay, P.C., our experienced lawyer represents clients throughout the Merrimack Valley, the North Shore of Massachusetts, and throughout New England. The Massachusetts cities we serve include Amesbury, Andover, Bedford, Beverly Farms, Boston, Cambridge, Danvers, Gloucester, Hamilton, Haverhill, Ipswich, Lawrence, Lexington, Lowell, Lynn, Marblehead, Newbury, Newburyport, Peabody, Reading, Rockport, Salem, Salisbury, Swampscott, Weston and Winchester.
Essex County ▪ Middlesex County ▪ Suffolk County

The information you obtain at this site is not, nor is it intended to be, legal advice. You should consult an attorney for individual advice regarding your own situation.