Atty. Mark Joseph Guay

Atty. Mark Joseph Guay

Mark Joseph Guay is a lawyer practicing business law, computers and software, taxation and 19 other areas of law. Mark received a B.A. degree from Fordham University in 1974, and has been licensed for 47 years.

Newburyport Newburyport 47 yrs experience 47 year
Call (978) 775-9022 Book Appointment

Profile Summary

About Mark Joseph Guay at a glance

Mark Joseph Guay is a Member based in Newburyport, Massachusetts, practicing at Mark J. Guay, P.C.. They have 47+ years of legal experience, licensed to practice since 1979. Their practice focuses on contracts, trademark, trusts, copyright, and business. Admitted to practice in Oklahoma (1979), U.S. District Court, Northern District of Oklahoma (1980), Massachusetts (1983), and U.S. District Court, District of Massachusetts (1986). Educated at Boston University Law School (LL.M. Tax, 1997) and Fordham University (B.A., 1974). Active member of Boston. Serands clients in Newburyport, MA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark Joseph Guay is a lawyer practicing business law, computers and software, taxation and 19 other areas of law
  • Mark received a B.A. degree from Fordham University in 1974, and has been licensed for 47 years
  • Mark practices at Mark J. Guay, P.C. in Newburyport, MA

Practice Areas Explained

Mark Joseph Guay's Areas of Practice

Each practice area below reflects the types of cases Mark Joseph Guay handles, with a brief overview of what that area of law covers.

Contracts

Mark Joseph Guay is one of 76,762 contracts attorneys indexed nationally. Browse contracts attorneys in Massachusetts →

Trademark Law

Mark Joseph Guay is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in Massachusetts →

Trusts

Mark Joseph Guay is one of 104,172 trusts attorneys indexed nationally. Browse trusts attorneys in Massachusetts →

Copyright Law

Mark Joseph Guay is one of 17,495 copyright attorneys indexed nationally. Browse copyright attorneys in Massachusetts →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Mark Joseph Guay is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Massachusetts →

Jurisdictional Context

Why local counsel matters in Massachusetts

Practicing law in Massachusetts. Legal matters in Massachusetts are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Newburyport are typically filed in the local municipal court or the appropriate Massachusetts state district court, depending on subject matter and amount in controversy. An attorney licensed in Massachusetts brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Massachusetts courts without local counsel or pro hac vice admission.

Looking for additional Massachusetts attorneys? Browse all attorneys in Newburyport or all attorneys in Massachusetts.

Frequently Asked

Common questions about Mark Joseph Guay

Where is Mark Joseph Guay's law office located?
Mark Joseph Guay's law practice is located in Newburyport, Massachusetts. The firm is Mark J. Guay, P.C.. You can contact the office directly through this profile page.
What practice areas does Mark Joseph Guay handle?
Mark Joseph Guay focuses on contracts, trademark, trusts, copyright, business. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has Mark Joseph Guay practiced law?
Mark Joseph Guay has 47+ years of legal experience and has been licensed since 1979.
Where did Mark Joseph Guay go to law school?
Mark Joseph Guay earned their education at (LL.M. Tax, 1997); (B.A., 1974).
How can I contact Mark Joseph Guay for a consultation?
You can contact Mark Joseph Guay directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

LL.M. Tax
Boston University Law School
- 1997
B.A.
Fordham University
- 1974

Bar Admissions

Oklahoma
Admitted: 1979
U.S. District Court, Northern District of Oklahoma
Admitted: 1980
Massachusetts
Admitted: 1983
U.S. District Court, District of Massachusetts
Admitted: 1986
U.S. Tax Court
Admitted: 1997

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