Posted by Larry Hoover on June 24, 2007, at 16:33:45
In reply to Re: How many different versions of citalopram (gen cel » Larry Hoover, posted by Zyprexa on June 24, 2007, at 12:15:23
> Thanks Lar!
>
> I was also looking at olanzapine, They have all these dates, but how do you know when it will be on the market?
>
> ZyprexaI'm not sure exactly what you're referring to, but there are a number of tentative ANDAs on file. Tentative approvals generally depend on the courts resolving if a patent is valid or not. In the case of olanzapine, the original patent expired in 1995, before the drug was approved as an antipsychotic. Lilly had obtained a new patent, though, and the issue was taken to court by a hopeful generic manufacturer. Lilly won, as their new patent was for the previously unknown antipsychotic activity, which had the property been appreciated by them (or others), it would have been marketed by them. Thus, the antipsychotic activity was upheld as a novel and patentable character of the drug, despite the expiry of the original patent. Lilly's newer patent does not expire until April 2011.
Lar
poster:Larry Hoover
thread:764950
URL: http://www.dr-bob.org/babble/20070622/msgs/765459.html