Mark Taticchi represents and counsels clients in appellate litigation, complex civil disputes and class action cases. A frequent author on consumer contracts, class actions and other legal issues, Mark has prepared successful petitions to the Pennsylvania State Supreme Court, persuaded the U.S. Courts of Appeals on behalf of clients, and drafted numerous cert petitions and amicus briefs in cases before the U.S. Supreme Court.

Appellate Litigation

Mark has extensive experience in appellate litigation, including questions of standing, jurisdiction, preemption, arbitrability and class certification. In addition to briefing and arguing direct appeals, Mark regularly assists clients with petitions for discretionary appellate review, including petitions for interlocutory review of a trial-court decision, requests for rehearing of an unfavorable ruling at an intermediate appellate court, and petitions for review in state and federal courts of last resort.

Mark clerked for Associate Justice Anthony M. Kennedy of the Supreme Court of the United States and the Honorable Sandra S. Ikuta of the United States Court of Appeals for the Ninth Circuit.

Commercial Litigation, Class Action

Mark counsels clients on various consumer-fraud, deceptive trade practices and unfair-competition matters arising under both state and federal law. He also possesses extensive experience with aggregate litigation, including both mass torts and class actions. Mark regularly assists clients in navigating both the procedural requirements of class certification and the unique strategic considerations that accompany aggregate litigation.

Services & Industries


Bar Admissions

District of Columbia
New York

Court Admissions

U.S. Court of Appeals for the Second Circuit
U.S. Court of Appeals for the Third Circuit
U.S. Court of Appeals for the Sixth Circuit
U.S. Court of Appeals for the Seventh Circuit
U.S. District Court for the Eastern District of New York
U.S. District Court for the Eastern District of Pennsylvania


U. S. Court of Appeals for the Ninth Circuit, Hon. Sandra S. Ikuta, 2011-2012
United States Supreme Court, Hon. Anthony M. Kennedy, 2010-2011


George Washington University Law School
J.D. Order of the Coif, The George Washington Law Review - Editor-in-Chief (2010)

Pennsylvania State University
B.A. (2007)

Insights & Events

Leadership & Community

Pro Bono

  • Mark worked on a two-year effort to end the Pennsylvania Department of Corrections (DOC) practice of holding death-sentenced prisoners in permanent solitary confinement. Reid v. Wetzel.
  • Mark drafted a successful petition for allowance of appeal to the Supreme Court of Pennsylvania, persuading that court to review an intermediate appellate decision that had authorized the Pennsylvania State Police to refuse to disclose a full, unredacted copy of its policy governing the use of social media in criminal and employment-background investigations. ACLU of Pa. v. Pa. State Police (Pa. 2018).
  • Mark prepared a cert petition in an appeal out of the Second Circuit, challenging the district court’s use of crimes of which the defendant had been acquitted as a basis for increasing the length of his sentence for the two counts on which he had been convicted. Medina v. United States (U.S. 2017).

Civic Activities

  • Philadelphia Community Legal Services — Leadership Council, 2019-present


  • Faegre Drinker — Pro Bono Honor Roll, 2020-22
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