You’re referring to the FDA’s Nov 2007 request for Lovenox immunogenicity data. Since ANDA’s do not have Complete Response Letters, the Nov 2007 FDA correspondence was pigeonholed as a “non-approvable” letter but it was tantamount to a delay rather than a rejection.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”