Colleen K. O'Brien Associate




Colleen O’Brien is a litigator who concentrates her practice on general liability, negligence-based torts, premises liability, products liability, toxic torts, contract enforcement and transportation. She has effectively defended clients in a broad range of civil and business disputes in state and federal courts.

Colleen has experience representing commercial and multi-family residential owners and managers, manufacturers, fabricators, retailers, general contractors, subcontractors, insurers, financial institutions and individuals. Colleen regularly handles personal injury and property damage cases involving allegations of negligence, violations of consumer protection acts, fraud/misrepresentation, and breaches of contracts and warranties. In addition to litigation, Colleen has counseled companies on a range of issues, including regulatory compliance, intellectual property protection and employment matters.

Colleen is currently on the Executive Board of Maryland Defense Counsel (MDC), a nonprofit organization for civil defense attorneys that focuses on continuing education and voicing defense interests to improve the Maryland courts. She previously served as treasurer of the organization’s Political Action Committee.  

Prior to joining Wilson Elser, Colleen was an associate with one of Baltimore’s largest civil defense firms and previously a summer associate and law clerk with that firm. While in law school, Colleen was an editor of the Law Review and a member of the Washington, D.C. Regional Champion National Appellate Advocacy Moot Court Team. She served as a judicial intern to the Honorable George L. Russell, III at the Baltimore City Circuit Court.

Before attending law school, Colleen worked in the sales department of a global biopharmaceutical company, where she gained valuable industry insight relevant to representing pharmaceutical and medical device manufacturers and distributors.

Representative Matters

Summary judgment in favor of a real estate firm on statute of limitations grounds in case where home sellers alleged that the firm engaged in misrepresentations and negligence during a closing.

Defense verdict for commercial driver and his corporate employer on claims of negligence, vicarious liability and negligent entrustment in the operation of a tractor trailer.

Enforced self-storage facility contract and obtained defense verdict where lessee claimed failure to comply with Maryland notice laws prior to conducting auction.

Obtained summary judgment for parent company on claim by an insured that the parent company tortiously interfered with insurance claims handling by its subsidiary.