Re: Geneic Lexapro?On Sat, 01 Mar 2008 00:35:27 GMT, Salmon Egg <SalmonEgg@sbcglobal . net >
wrote:
>In article <haufs31o76qp0srvhgl0j3po5idsf3pvtq@4ax . com >,
> mred <mred@invalid.invalid> wrote:
>
>> Exactly, drug companies use this technique to continue a revenue
>> stream, that otherwise dries up after the brand name patent expires.
>> People knowledgeable, physicians, pharmacists can steer patients to
>What I do not understand is the legal basis upon which new patents can
>be issued for a single pure enantiomer. I would think that in most
>cases, the technology to extract a pure enantiomer is well known to a
>competent chemical practitioner and does not require the innovation
>deserving of a patent.
>
>The same comment applies to time release medications. What is the
>inventive spark to that?
>
>Bill
Legal basis, not sure. I would think the original patent includes both
isomers. So why don't they both expire? Its not really a novel
compound. Probably need a patent attorney to explain. The PBM's are on
to this practice, they almost never pay for newer items, without prior
authorization or tiered co-pays. The drug manufactures are trying to
protect bottom line, because low numbers of new drugs currently in
pipeline.
--
mred