Sean Marotta's practice is as broad and diverse as the Appellate group's. He has briefed cases in the Supreme Court, federal courts of appeals, and state intermediate and courts of last resort. Sean has also drafted petitions for certiorari, briefs in opposition, merits briefs, and amicus briefs in support of certiorari on the merits. Sean has developed particular know-how in automotive, administrative, and media litigation.

Sean has argued close to a dozen appeals in state and federal courts. He has argued in the New Jersey Supreme Court, the Third and Seventh Circuits, the New York Appellate Division, and the Florida District Court of Appeal.

Sean previously clerked for the Honorable Jane Grall of the New Jersey Superior Court, Appellate Division. While in law school, Sean was the Senior Articles Editor of the William & Mary Law Review and graduated as the class valedictorian.