McDonnell & Associates


King of Prussia, PA


Cherry Hill, NJ


— A group of dedicated, diverse & experienced legal professionals



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MCDA Law Firm


Pennsylvania and New Jersey Lawyers

Committed to Quality Representation 

Law Offices of McDonnell & Associates provides exceptional, individualized client service in Pennsylvania and New Jersey and also nationally upon client request. We are a mid-sized litigation boutique with the experience of a large law firm. Our professionals represent individuals, small to mid-sized companies, and large Fortune 500 corporations in the practice areas of employment law, transportation, premises liability, complex torts, premises security, products liability, and commercial litigation. Our firm devotes personalized cost-effective service for each client including the utilization of innovative billing and work techniques.

Seasoned Trial Lawyers & Litigators

Our lawyers have experience both as trial lawyers and litigators. We have tried over 100 jury trials to verdict in multiple jurisdictions. Our firm lawyers have litigated countless alternative dispute resolution proceedings, including mass mediations, arbitrations, and mini-trials. Our attorneys have acted as arbitrators and one of our attorneys also serves as a Magisterial District Justice. Because we represent large institutional clients in complex cases, we have vast experience with electronic discovery and managing document-intensive matters. Our clients demand, and we provide, unique experience and equipment to represent them in today’s technologically advanced environment.  McDonnell & Associates brings the right team to guide your case through any legal dispute with the goal of assisting you to make a sound and economically prudent decision.

National Consultants for Large Retailer

The firm’s lawyers frequently serve as national or consulting counsel on medically complex recurring claims, including allegations of Brain, Spinal Cord, and Neurological injuries. Firm attorneys are part of a national team of lawyers for large retailer specifically retained for their unique experience with the diagnosis, treatment and expert testimony involving Chronic Regional Pain Syndrome (“CRPS”), a controversial pain disorder. The firm also serves as national consultants on civil cases arising from criminal acts of third parties where there are allegations of inadequate security. In many of these matters, the firm’s attorneys conduct focus groups and opinion exercises to develop a winning strategy for trying the case.

Dedicated to Diversity

McDonnell & Associates actively promotes women and minorities in its hiring and promotional practices, and is committed to various diversity groups. The firm is Certified by the Women's Business Enterprise National Council (WBENC), the largest third- party certifier of women-owned businesses. Among the firm’s leadership, 75% of our partners are women and 25% are minorities. Overall, our attorneys are 77% women and 30% minorities. When we represent clients before judges and juries, our attorneys reflect the make-up and demographics of our increasingly diverse society.

McDonnell & Associates' inclusion efforts go well beyond the law firm walls. McDonnell & Associates actively recruits and partners with other diverse suppliers for goods and services utilized by the firm. The firm is active in the community; and most of our attorneys serve in various capacities with many charities.




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AV Martindale-Hubbell Peer Review Rated


MCDA has an attorney who is a New Jersey Supreme Court Certified Trial Lawyer: Patrick J. McDonnell 

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The Law Offices of McDonnell & Associates serves clients throughout Pennsylvania and southern New Jersey in communities such as Philadelphia, King of Prussia, Harrisburg, Lancaster, Reading, Allentown, Scranton, Cherry Hill, Camden, Millville, and Atlantic City.



Metropolitan Business Center
860 First Avenue, Unit 5B
King of Prussia, PA, 19406
Phone: 610-337-2087
Fax: 610-337-2575

500 Marlton Pike West
Cherry Hill, NJ 08002
Phone: 856-429-5300
Fax: 856-429-5314