Aliza R. Karetnick
Aliza Karetnick is a nationally known litigation partner representing clients in high-stakes commercial matters and class actions. Her clients span multiple industries, including the manufacturing, personal care, food and beverage, and financial sectors. Well-versed in defending large commercial businesses in disputes involving allegations of fraud and deceptive trade practices, Aliza guides clients through complex cases and class action matters in state and federal courts across the United States. She is often asked to take the reins leading crisis and multi-disciplinary teams requiring careful risk management.
Aliza’s experience with complicated cases led to her appointment as a special master by the US District Court for the Eastern District of Pennsylvania. She is an active member of several industry associations and regularly writes and speaks about legal and business issues affecting the personal care and food industries.
Prior to joining Morgan Lewis, Aliza led the commercial litigation and dispute resolution practice in the Philadelphia office of a national law firm, where she also served as co-leader of its cross-practice manufacturing and consumer products team and class action litigation team.
- Defended a large color cosmetics company in class actions involving allegations of false advertising and misbranded products
- Represented a cosmetics holding company in putative class actions across the country involving allegations of false advertising relating to PFAS
- Defended a national bank in litigation involving allegations of fraud and breach of fiduciary duty relating to account holders’ Ponzi scheme
- Defended a large financial institution in multiparty disputes involving allegations of fraud related to a Ponzi scheme
- Represented a global flavor manufacturer and distributor in a complex commercial dispute arising out of an asset purchase
- Represented a multinational perfumer and flavor producer in complex post-acquisition commercial litigation matters and enforcement of nondisclosure agreements
- Represented a technology service provider in litigation involving the application of foreign antitrust and intellectual property laws
- Represented a national federated tax-exempt organization in a Delaware governance and merger dispute
- Represented manufacturer in putative class action involving environmental nuisance claims
- Obtained a complete affirmance of summary judgment on novel issues in the US Court of Appeals for the Third Circuit relating to copyright preemption and claims under RICO, the Computer Fraud and Abuse Act, and the Lanham Act
- Represented a publicly traded global manufacturer and purveyor of packaged foods in trade secrets matters
- Defended a color cosmetics brand in a products liability class action involving talc
- Advised a haircare manufacturer on Federal Trade Commission (FTC) and US Food and Drug Administration (FDA) claims issues
- Advised a flavor producer on FDA issues and "food fraud"
- Represent an ingredient supplier in Lanham Act litigation involving company’s primary marketplace competitor in the sweetener industry
- Represent third-party logistics company in complex breach of contract action involving termination of a services relating to personal care products
- Represent personal care products contract manufacturer in breach of contract matter involving product specifications
- University of Pennsylvania Law School, 1998, J.D., articles editor, University of Pennsylvania Journal of Constitutional Law
- Bates College, 1993, B.A., anthropology, magna cum laude, Phi Beta Kappa
- Pennsylvania
- US Court of Appeals for the Third Circuit
- US Court of Appeals for the Fourth Circuit
- US Court of Appeals for the Ninth Circuit
- US District Court for the Eastern District of Pennsylvania


Listed, The Best Lawyers in America, Commercial Litigation, Philadelphia (2022–2026)
Best of the Bar, Business Litigation, Philadelphia Business Journal (2023)
Diversity Award, Diversity Law Institute (2017)
Fellow, Litigation Counsel of America – Trial Lawyer Honor Society (2014–present)
Lawyer on the Fast Track, The Legal Intelligencer (2011)
Member, Independent Beauty Association
Member, Personal Care Products Counsel
Member, Cosmetic Executive Women
Member, American Bar Association
Chair of the Board of Directors, Students Run Philly Style
Past Member, Board of Directors, Philadelphia Fashion Incubator
