Atty. Patrick David Duplessis

Atty. Patrick David Duplessis

Patrick David Duplessis is a lawyer practicing intellectual property, intellectual property litigation, trademarks and 4 other areas of law. Patrick received a B.S. degree from Boston University in 2006, and has been licensed for 17 years.

Springfield Springfield 17 yrs experience 17 year
Call (413) 923-6820 Book Appointment

Intellectual Property & More Attorney · Serving Springfield, MA · 17+ Years Experience

Profile Summary

About Patrick David Duplessis at a Glance

Patrick David Duplessis is an Associate based in Springfield, Massachusetts, practicing at O'Shea Getz P.C.. They have 17+ years of legal experience, licensed to practice since 2009. Their practice focuses on patent, trademark, business, and ip. Admitted to practice in California (2009) and Massachusetts U.S. District Court, Southern District of California U.S. District Court, District of (2010). Educated at University of San Diego School of Law (J.D., 2009) and Boston University (B.S. Biomedical, 2006). Serves clients in Springfield, MA and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About Patrick David Duplessis

  • Patrick David Duplessis is a lawyer practicing intellectual property, intellectual property litigation, trademarks and 4 other areas of law
  • Patrick received a B.S. degree from Boston University in 2006, and has been licensed for 17 years
  • Patrick practices at O'Shea Getz P.C. in Springfield, MA

Practice Areas Explained

Patrick David Duplessis's Areas of Legal Practice

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

Patent Law in Springfield

Patrick David Duplessis is one of 20,632 patent attorneys indexed nationally. Browse patent attorneys in Massachusetts →

Trademark Law in Springfield

Patrick David Duplessis is one of 23,086 trademark attorneys indexed nationally. Browse trademark attorneys in Massachusetts →

Business & Corporate Law in Springfield

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

Patrick David Duplessis is one of 497,491 business attorneys indexed nationally. Browse business attorneys in Massachusetts →

Intellectual Property in Springfield

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

Patrick David Duplessis is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in Massachusetts →

Jurisdictional Context

Why Local Counsel Matters in Springfield

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 Springfield 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.

Springfield Courts and Legal Process

Choosing a Springfield-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 Springfield or all attorneys in Massachusetts.

Frequently Asked

Common Questions About Patrick David Duplessis

Where is Patrick David Duplessis's law office located?
Patrick David Duplessis's law practice is located in Springfield, Massachusetts. The firm is O'Shea Getz P.C.. You can contact the office directly through this profile page.
What practice areas does Patrick David Duplessis handle?
Patrick David Duplessis focuses on patent, trademark, business, ip. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has Patrick David Duplessis practiced law?
Patrick David Duplessis has 17+ years of legal experience and has been licensed since 2009.
Where did Patrick David Duplessis go to law school?
Patrick David Duplessis earned their education at (J.D., 2009); (B.S. Biomedical, 2006).
How can I contact Patrick David Duplessis for a consultation?
You can contact Patrick David Duplessis 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 Springfield Choose Patrick David Duplessis

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 Patrick David Duplessis's practice in the field of patent, trademark, business, and ip.

Decade-Tested Legal Experience

Patrick David Duplessis brings 17+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Multi-State Bar Admission

Licensed in California and Massachusetts U.S. District Court, Southern District of California U.S. District Court, District of , Patrick David Duplessis can represent clients in cases that span state lines or require counsel in multiple jurisdictions.

Broad Practice Area Coverage

Covering patent, trademark, and business, Patrick David Duplessis can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in Springfield

A Springfield-based practice means Patrick David Duplessis 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 Patrick David Duplessis Handles in Springfield

Below is a representative sample of the types of matters Patrick David Duplessis 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 Patrick David Duplessis directly to discuss the specifics of your situation.

Search Reference

How People Find Patrick David Duplessis Online

Prospective clients searching for legal help in Springfield 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 Patrick David Duplessis.

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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 Patrick David Duplessis directly.

Education & Law School Background

J.D.
University of San Diego School of Law
- 2009
B.S. Biomedical
Boston University
- 2006

Bar Admissions & Licensed Jurisdictions

California
Admitted: 2009
Massachusetts U.S. District Court, Southern District of California U.S. District Court, District of
Admitted: 2010

Client Reviews & Ratings — Patrick David Duplessis

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