Justin C. Danilewitz draws upon his trial and investigative experience as a former federal prosecutor, and his defense of individuals and entities, to zealously defend against civil and criminal enforcement actions, conduct internal investigations, and respond to whistleblower complaints and false claims (qui tam) suits. An experienced trial lawyer, Justin succeeded in obtaining the dismissal of a 59-count criminal complaint – before trial, and after a lengthy preliminary hearing – against an energy company employee, after his cross-examination of the lead detective revealed critical failures in the government’s proof.

Justin is ranked by Chambers USA, 2021, as one of "America's Leading Lawyers in Litigation: White-Collar Crime & Government Investigations." Reviews published with the ranking describe him as having “a truly superb legal mind” with an “ability to distill the facts and the pertinent case law to formulate nuanced and compelling arguments” that “is quite simply world-class.” Justin was further described as having a “positive, persistent and tenacious approach with a ‘never give up’ attitude.”

In 2020, after a demonstration of the defense by Justin and SEA&L Partner Chris Hall, the U.S. Department of Justice agreed to dismiss with prejudice an indictment against a company client after the U.S. Attorney’s Office had improvidently indicted the client on charges of conspiracy, mail fraud, and theft of government funds.

In 2019, Justin and Chris persuaded the U.S. Attorney’s Office of the Southern District of New York, and the New York Regional Office of the U.S. Securities and Exchange Commission, not to proceed with charges against a client in an insider trading investigation, after the SEC had already expressed its intention to do so in a “Wells Notice” issued to the client.

Together with SEA&L Partner Natashia Tidwell, Justin was selected to serve as counsel to the court-appointed independent monitor of the pharmaceutical manufacturer Mallinckrodt, in a five-year monitorship arising out of Mallinckrodt’s bankruptcy proceeding stemming from national opioid litigation.

Justin is also an experienced appellate advocate and accomplished legal writer, and serves as vice chair of the Firm’s Appellate Practice. He has written appellate briefs on both criminal and civil issues, some before the U.S. Supreme Court. Together with Chris Hall, Justin successfully led the briefing and oral argument in the Pennsylvania Supreme Court relating to a matter of international interest – the Pennsylvania Attorney General's grand jury investigation into the Catholic Church – resulting in two landmark precedential opinions in favor of their clients, protecting the constitutional right to reputation in Pennsylvania, and changing the nature of grand jury practice in Pennsylvania. The Pennsylvania Association of Criminal Defense Lawyers recognized Justin and Chris for their successful efforts in this matter with the prestigious Alan Jay Josel Award for Advocacy.

Justin was also named to The Legal Intelligencer's 2019 Power Players list.