Converted OTC Products are Not ‘Listed Drugs’: FDA
Attorney Michael Shumsky (Hyman, Phelps & McNamara) says FDA has changed a longstanding practice and now says a full switch to over-the-counter status through an sNDA does not create a new listed drug and thus does not create a new period of 180-day exclusivity. Writing in his firm’s FDA Law Blog, Shumsky says the change was contained in a previously undisclosed agency memo that the firm obtained through a Freedom of Information Act request.
Shumsky describes the change as the latest FDA attempt to rein in or even eliminate 180-day exclusivity for the first generic applicant to challenge an NDA holder’s patent monopoly.
His post says FDA provides little interpretive justification for its new approach and appears to base it entirely on a superficial change in administrative practice in how products are numbered in the Orange Book.
“The consequences of FDA’s previously undisclosed change are clear: it allows NDA holders to effectively gut the 180-day exclusivity incentive by effectuating an OTC switch after receiving a first applicant’s Paragraph 4 certification,” Shumsky concludes. “For applicants who certify to a listed patent when the product is prescription-only, OTC conversion renders 180-day exclusivity illusory because the product can no longer be marketed lawfully following the OTC switch.”