Business Details
19 Years
experience
Experienced Trial Lawyer Serving NH and MA Clients
John Gillen Law Office has provided dedicated legal representation for over 29 years, specializing in complex litigation across personal injury, criminal defense, business disputes, and real estate matters. With extensive trial experience in District, Superior, and Federal Courts of New Hampshire and Massachusetts, our practice combines deep legal expertise with a commitment to client advocacy. As a former Essex County Assistant District Attorney and active member of prestigious legal associations, we maintain rigorous professional standards while prioritizing personalized service.Our approach emphasizes honest communication, ethical practice, and leveraging decades of courtroom experience to protect client interests. This tradition of excellence, rooted in values passed down through generations of legal professionals, continues to guide our representation in both local and regional jurisdictions.
Services
Personal Injury
Criminal Defense
Business Litigation
Real Estate Law
Mediation Services
Details
- Year established: 2007
Highlights and features
- We offer 29+ years of trial experience in state and federal courts
- Our team maintains active memberships in premier legal associations
- We provide former prosecutorial perspective through defense practice
- Our office includes court-appointed mediation specialists
- We combine generational legal wisdom with modern courtroom strategies
What people say
Extensive courtroom experience
Deep legal knowledge
Ethical representation
Personalized attention
Successful outcomes
Services
Personal Injury
We represent clients in personal injury cases resulting from automobile accidents, slip-and-fall incidents, defective products, and other negligence-related harm. Our practice focuses on securing fair compensation for medical expenses, lost wages, and pain and suffering through skilled negotiation and aggressive courtroom advocacy. With extensive experience in wrongful death and catastrophic injury cases, we provide compassionate yet results-driven legal representation.
Criminal Defense
Our criminal defense practice handles felony and misdemeanor charges including DWI/DUI, drug possession, and assault allegations. We defend clients in state and federal courts using strategic defense approaches developed through decades of courtroom experience. As former prosecutors and court-appointed mediators, we leverage unique insights to protect client rights while navigating complex legal procedures and negotiating favorable outcomes.
Business Litigation
We resolve business conflicts involving contract disputes, non-compete agreements, and consumer protection issues through litigation and alternative dispute resolution. Our practice addresses shareholder conflicts, partnership disputes, and commercial contract enforcement while minimizing operational disruption for business clients. We combine transactional knowledge with trial readiness to achieve optimal resolutions.
Real Estate Law
Our real estate services cover purchase agreements, residential closings, landlord-tenant disputes, and development projects. We represent clients in property transactions, zoning matters, and title insurance issues while serving as Stewart Title Insurance Company agents. The practice addresses both residential and commercial real estate needs across multiple jurisdictions.
Mediation Services
We provide court-approved mediation for civil disputes through our listing with the Essex County Bar Association. Our mediators facilitate resolution of personal injury claims, business conflicts, and real estate disputes using proven negotiation techniques and deep understanding of litigation risks. This service offers cost-effective conflict resolution while maintaining attorney-client privilege.
People
John Gillen
Attorney
With 29+ years of trial experience, John Gillen specializes in litigation across personal injury, criminal defense, and business law. A former Essex County Assistant District Attorney and court-appointed mediator, he brings unique prosecutorial insight to defense cases. Admitted in multiple state and federal courts, he maintains active memberships in leading legal associations while emphasizing ethical practice and client advocacy.
Questions
What areas of law does Attorney Gillen specialize in?
Attorney Gillen focuses on personal injury litigation, criminal defense, business disputes, and real estate law with extensive trial experience in state and federal courts.
How many years has the firm been in practice?
The Law Office of Attorney John Gillen has operated since 2007, though Attorney Gillen's legal career spans 29+ years including prosecutorial and private practice experience.
Which courts does the firm handle cases in?
We represent clients in District Courts, Superior Courts, and Federal Courts across New Hampshire and Massachusetts, with particular focus on Rockingham County NH and Essex County MA.
What makes this firm different from other law practices?
Our unique combination of prosecutorial background, mediation expertise, and multi-jurisdictional experience provides strategic advantages in litigation and dispute resolution across multiple practice areas.
Does the firm offer mediation services?
Yes, Attorney Gillen serves as an approved mediator for the Essex County Bar Association, providing alternative dispute resolution for civil litigation matters.
