When do the patents covering the drug Rituxan expire?

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Request for Question Clarification by pafalafa-ga on 14 Jan 2005 05:19 PST

bipin11-ga,

I found a brief discussion of the Rituxan patents which makes clear
that their are a number of patents held -- in the US and elsewhere --
with different expiration dates.  Most of the relevant patents expire
between 2015 and 2018.

Would a link to this information -- which contains some additional
details, but does not itemize the individual patents and their
expiration dates -- meet your needs as an answer to your question?

Let me know.

pafalafa-ga

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Clarification of Question by bipin11-ga on 14 Jan 2005 06:27 PST

I am looking for specific patent numbers relating to Rituxan (a
monoclonal antibody) and its human target, CD20.  I know that
Genentech also has patents relating to 'production of monoclonal
antibodies', famously known as the Cabilly patents but they are not of
concern.

I hope this clarify's my question.

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Request for Question Clarification by pafalafa-ga on 14 Jan 2005 09:04 PST

MAN, these are infuriatingly hard to track down.  Do you think this is one of them:


http://patft.uspto.gov/netacgi/nph-Parser?u=/netahtml/srchnum.htm&Sect1=PTO1&Sect2=HITOFF&p=1&r=1&l=50&f=G&d=PALL&s1=5736137.WKU.&OS=PN/5736137&RS=PN/5736137


Let me know.

pafalafa-ga