Yvonne M. McKenzie

Yvonne M. McKenzie


Philadelphia, PA
Phone: 215.981.4171    Fax: 215.981.4750


Representative engagements in which Ms. McKenzie has been involved include:

  • defending a pharmaceutical company in multistate class actions involving alleged violations of good manufacturing standards in connection with the production and distribution of a prescription medicine
  • defending food distributor in consumer class action involving allegations of false advertising in violation of state consumer protection laws
  • representing a pharmaceutical company in nationwide consumer class actions seeking restitution and medical monitoring under state unfair trade practices and consumer protection laws
  • representing pharmaceutical companies in third-party payor litigation involving claims of fraudulent marketing practices and pricing under RICO and state consumer protection statutes
  • representing pharmaceutical companies in individual personal injury cases in both federal and state courts
  • performing risk assessments for pharmaceutical and food clients on litigation and enforcement risk based on claims made in labeling and advertising
  • defending pharmaceutical companies in litigation brought by state Attorneys General and government entities seeking restitution and civil penalties under state consumer protection laws for alleged fraudulent sales and marketing practices
  • providing counseling to pharmaceutical, food and cosmetics clients on labeling and advertising issues
  • counseling manufacturer of over-the-counter drug on product recall and interaction with FDA
  • counseling and defending companies and individuals in connection with state and federal government investigations focusing on sales and marketing practices, counterfeit products and government defense contracting fraud
  • representing tobacco company in class action seeking implementation and funding of medical monitoring and smoking cessation program
  • representing large companies in complex litigation involving alleged violations of antitrust laws, accounting malpractice and securities fraud.


  • J.D., summa cum laude, Villanova University School of Law, 2002, managing editor, Villanova Law Review; member, Order of the Coif
  • B.A., English and Psychology, magna cum laude, Duquesne University

Bar Admissions

  • Pennsylvania

Court Admissions

  • U.S. District Court, Eastern District of Pennsylvania
  • U.S. Court of Appeals, Third Circuit


  • Hon. James McGirr Kelly: U.S. District Court, Eastern District of Pennsylvania, Philadelphia, PA, 2002-3

Practice Areas