Atty. Mark Leonardo

Atty. Mark Leonardo

Mark Leonardo is a lawyer practicing health care, energy & utilities, intellectual property and 4 other areas of law. Mark received a B.S. degree from University of Massachusetts in 1992, and has been licensed for 30 years.

Boston Boston 30 yrs experience 30 year
Call (857) 365-3472 Book Appointment

Energy / Utilities & More Attorney · Serving Boston, MA · 30+ Years Experience

Profile Summary

About Mark Leonardo at a Glance

Mark Leonardo is a Partner: Intellectual Property based in Boston, Massachusetts, practicing at Brown Rudnick LLP. They have 30+ years of legal experience, licensed to practice since 1996. Their practice focuses on business, ip, health care, and energy. Admitted to practice in Massachusetts U.S. Court of Appeals for the Federal Circuit U.S. Patent and Trademark Office (1996). Educated at Cleveland-Marshall College of Law (J.D., 1995) and University of Massachusetts (B.S. M.E., 1992). Active member of Massachusetts Bar Association American Bar Association American Intellectual Property Law Association Boston Patent Law Association. Serves clients in Boston, MA and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About Mark Leonardo

  • Mark Leonardo is a lawyer practicing health care, energy & utilities, intellectual property and 4 other areas of law
  • Mark received a B.S. degree from University of Massachusetts in 1992, and has been licensed for 30 years
  • Mark practices at Brown Rudnick LLP in Boston, MA

Practice Areas Explained

Mark Leonardo's Areas of Legal Practice

Each practice area below reflects the types of cases Mark Leonardo handles, with a practical overview of what that area of law involves and how it may apply to your situation in Boston.

Business & Corporate Law in Boston

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

Mark Leonardo is one of 497,491 business attorneys indexed nationally. Browse business attorneys in Massachusetts →

Intellectual Property in Boston

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

Mark Leonardo is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in Massachusetts →

Health Care Law in Boston

Health care attorneys for HIPAA, Medicare, Medicaid, regulatory compliance, and medical licensing matters.

Mark Leonardo is one of 66,157 health care attorneys indexed nationally. Browse health care attorneys in Massachusetts →

Energy & Utilities Law in Boston

Energy attorneys for oil & gas, renewables, utility regulation, and energy sector transactions.

Mark Leonardo is one of 35,985 energy attorneys indexed nationally. Browse energy attorneys in Massachusetts →

Jurisdictional Context

Why Local Counsel Matters in Boston

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 Boston 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 venue, 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.

Boston Courts and Legal Process

Choosing a Boston-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.

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

Frequently Asked

Common Questions About Mark Leonardo

Where is Mark Leonardo's law office located?
Mark Leonardo's law practice is located in Boston, Massachusetts. The firm is Brown Rudnick LLP. You can contact the office directly through this profile page.
What practice areas does Mark Leonardo handle?
Mark Leonardo focuses on business, ip, health care, energy. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has Mark Leonardo practiced law?
Mark Leonardo has 30+ years of legal experience and has been licensed since 1996.
Where did Mark Leonardo go to law school?
Mark Leonardo earned their education at (J.D., 1995); (B.S. M.E., 1992).
How can I contact Mark Leonardo for a consultation?
You can contact Mark Leonardo 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.

Professional Profile

Why Clients in Boston Choose Mark Leonardo

Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Mark Leonardo's practice in the field of business, ip, health care, and energy.

Decade-Tested Legal Experience

Mark Leonardo brings 30+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Broad Practice Area Coverage

Covering business, ip, and health care, Mark Leonardo can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in Boston

A Boston-based practice means Mark Leonardo attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.

Case Types

Common Legal Issues Mark Leonardo Handles in Boston

Below is a representative sample of the types of matters Mark Leonardo has experience with under Massachusetts law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.

Business formation and structure
Business
Contract drafting and review
Business
Partnership disputes
Business
Merger and acquisition support
Business
Trademark registration
IP
Copyright infringement defense
IP
Patent prosecution
IP
Trade secret protection
IP

This list is illustrative, not exhaustive. Contact Mark Leonardo directly to discuss the specifics of your situation.

Search Reference

How People Find Mark Leonardo Online

Prospective clients searching for legal help in Boston commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like Mark Leonardo.

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If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with Mark Leonardo directly.

Education & Law School Background

J.D.
Cleveland-Marshall College of Law
- 1995
B.S. M.E.
University of Massachusetts
- 1992

Bar Admissions & Licensed Jurisdictions

Massachusetts U.S. Court of Appeals for the Federal Circuit U.S. Patent and Trademark Office
Admitted: 1996

Client Reviews & Ratings — Mark Leonardo

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