Who We Are

Who We Are

Founded in 1984 by three litigation attorneys from a major Philadelphia law firm, Conrad O’Brien has established itself as the insider’s law firm—winning bet-the-company cases for AmLaw 100 firms and Fortune 500 companies, as well as high-stakes cases for government entities and individuals. Our attorneys are adept at resolving clients’ matters behind the scenes, but when that’s not possible, we do what we do best: take the case to trial and win.

By The Numbers


practice areas in which Conrad O’Brien was awarded a Tier 1 ranking in Philadelphia by U.S. News & World Report, "Best Law Firms" 2018


former assistant U.S. attorneys


marathons (and about 85 half-marathons) run


Irish solicitors


former law clerks


professional jazz musician

Our Approach

tenacity, flexibility, and collaboration

creative, big-picture thinking

empathy, integrity, and responsive service