The US Food and Drug Administration (FDA) recently issued a notice clarifying the agency’s approach to determining the scope of orphan drug exclusivity. According to the FDA, it intends to continue applying its orphan drug regulations such that the scope of orphan drug exclusivity is tied to the specific orphan indication for which a drug is approved, not the indication for which it was designated. This approach, however, is in contrast with the 2021 Catalyst Pharmaceuticals Inc. v. Becerra ruling, and will likely position the agency for future challenges. The FDA’s approach also lends uncertainty to the ultimate scope of current and future periods of orphan drug exclusivity.
Partner Jacqueline Berman and associate Nikita Bhojani discuss Catalyst and the uncertainty surrounding the FDA’s approach in a Law360 Expert Analysis article.