We are a national defense litigation law firm.

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Deasey, Mahoney & Valentini is a well-established national defense litigation law firm headquartered in Philadelphia.

Our clients benefit from our litigators’ collective experience in a variety of practice areas. For each matter they handle, senior litigators provide personal attention during all phases of representation and deliver exceptional, responsive service at a reasonable cost. 

In short, our attorneys strive to craft and deliver a superior product.

Insurance Coverage

Insurance coverage disputes and litigation frequently arise between policy holders and insurers, and Deasey, Mahoney & Valentini lawyers stand ready to represent our insurance company clients in these matters. Insurance coverage conflicts are a mainstay of our practice, with our clients benefitting from our attorneys’ in-depth knowledge and understanding of the challenging, highly regulated environment in which insurers operate.

2019 Deasey Mahoney & Valentini Super Lawyers and Rising Stars

We are proud to announce that two of its shareholders, Francis J. Deasey and Gerald J. Valentini, have been selected as Super Lawyers by Philadelphia Magazine.