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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.

Immigration Reform Litigation

The attorneys of Deasey, Mahoney & Valentini are on the cutting edge of immigration reform litigation defense for municipalities. We regularly represent municipalities when legislation regarding immigration reform is questioned in the court of law. Our law firm’s capabilities focus on defending immigration enforcement and relief measures being enacted by local governments. We provide legal counsel to ensure that proposed and enacted local legislation is constitutional and does not conflict with controlling federal law.

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DMV Secures a Defense Verdict in Philadelphia Court of Common Pleas

Partner, Frank Deasey and associate, Daniel Gradwohl successfully defended NET Treatment Services, Inc. following a seven-day jury trial in Philadelphia County. The case involved the tragic death of a four-month-old baby. NET Treatment Services, Inc. was contracted by the Philadelphia Department of Human Services “DHS”...

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