Legal Update Highlights FDA’s Guide on 3 Year Exclusivity
A legal update from Wilson Sonsini Goodrich & Rosati (WSGR) addresses FDA’s release earlier this month of a draft guidance (see story) clarifying the scope and eligibility criteria for new clinical investigation exclusivity (3-year exclusivity) under the Federal Food, Drug, and Cosmetic Act. The draft guidance provides detailed criteria for qualifying as a “new clinical investigation” essential to approval, including studies conducted or sponsored by the applicant.
Among other evidence, applicants need to show they have “conducted or sponsored” the new clinical investigation in order to qualify for the exclusivity. “To this end,” the update says, “applicants can provide documentation showing that it has either 1) taken over, merged with, or purchased the predecessor entity, or 2) purchased all rights to the drug asset from another entity or acquired exclusive rights to the study. The FDA notes that purchase of nonexclusive rights to a clinical investigation after it is completed is not sufficient to qualify for the three-year exclusivity.”
The draft guidance also addresses when studies involving new cohorts or treatment arms may qualify for exclusivity, according to the update. It says such studies may be eligible if:
- The cohort or arm constitutes a distinct clinical investigation
- FDA has not previously relied on those specific results
- The findings do not duplicate prior evidence used for approval
FDA also underscores that qualifying studies must measure clinical safety or effectiveness outcomes. Trials limited to pharmacokinetics, pharmacodynamics, or bioequivalence alone generally do not qualify, though studies combining these measures with clinical endpoints may be eligible, the update notes.
Additionally, the agency says it will continue using a case-by-case, multifactorial approach to encourage sponsors to submit results from distinct cohorts or treatment arms as they become available, rather than delaying submissions to bundle broader claims.
The draft guidance is open for public comment and may be updated with additional questions and answers over time. It also includes a template to help applicants formally request three-year exclusivity as part of their submissions.