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Is anyone aware of caselaw, comments by the PTO, or reviews discussing the
patentability issues regarding combinatorial chemistry?
I would also like to know if any list subscribers have any thoughts on the
use of chemical libraries as a 35 U.S.C. section 102 statutory bar to
patentability. i.e. on-sale bar, public use, etc.?
Are patent searchers concerned that the PTO is allowing 'library claims'
as in US 5,874,443? Should the PTO adopt a policy which would force
patentees to submit 2-D structures of all compounds claimed in a library
format so that the PTO could create an independent sub-structure
searchable database? I could imagine a similar system as that created for
the submission of aa and nucleotide sequences. Do any of the commercial
databases catalog the individual compounds that are given patented status
in library claims?
It would seem that combinatorial techniques are here to stay. How does
the patent office and the courts deal with these combinatorial product
claims? It would seem that the law created to address Markush groups
(imaginary chemical libraries) would almost certainly be interpreted
differently than law directed to 'real-life' compounds created through
combinatorial chemistry. That is, combinatorial library claims will carry
more weight than Markush claims, and render broad sections of the chemical
landscape off limits.
Clay Matthews, Ph.D.
cmatthews@fplc.edu
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