Draft Guidance Clarifies Orange Book Patent Submission Forms
FDA has released a draft guidance to assist NDA sponsors in properly submitting patent information for listing in the agency's Orange Book, providing answers to common questions surrounding the use of Forms FDA 3542 and FDA 3542a. The draft, “Forms FDA 3542a and FDA 3542: Questions and Answers”, is intended to clarify when each form should be used, who may complete and sign them, submission timelines, and FDA's expectations for correcting or updating patent information.
The guidance focuses on patent information submitted under section 505 of the Federal Food, Drug, and Cosmetic Act, which forms the basis for Orange Book patent listings that are central to Hatch-Waxman patent litigation and generic drug approval pathways. FDA says NDA applicants must use Form FDA 3542a when submitting patent information for unapproved applications, amendments, or supplements, while NDA holders must use Form FDA 3542 to submit patent information for approved products and supplements.
Among the key clarifications, FDA emphasizes that only patents claiming the drug substance, drug product, or approved methods of use associated with the NDA should be submitted. For method-of-use patents, sponsors must identify the specific approved use covered by the patent and provide an appropriate use code for Orange Book publication.
The agency also reiterates statutory filing deadlines. Patent information for approved NDAs generally must be submitted within 30 days of approval, while patents issued after approval must be submitted within 30 days of patent issuance. If FDA identifies deficiencies in a timely filed submission, sponsors have 15 days to provide corrected information.
FDA further clarifies that patent owners who are not NDA holders may assist in preparing and signing the forms but cannot submit them directly to the agency. Only NDA applicants or NDA holders may file the forms with FDA. The guidance also states that a separate form must be submitted for each patent.