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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


marathons (and about 83 half-marathons) run


former prosecutors


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


Conrad O'Brien attorneys individually ranked as industry leaders in Chambers USA 2017


professional jazz musician


Irish solicitors

Our Approach

tenacity, flexibility, and collaboration

creative, big-picture thinking

empathy, integrity, and responsive service