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Human Embryonic Stem Cell Patent held by WARF declared invalid
Stem Cell Battle Continues
The ongoing battle between the Wisconsin Alumni Research Foundation (WARF) and the Public Patent Foundation has seen one of WARF's three stem cell patents declared invalid by the US Patent and Trademark Office. The patents in question relate to methods for deriving and growing primate and human embryonic stem cells. The Public Patent Foundation has been arguing that the discoveries were not novel enough to be patented and that the claims were too broad and thus impeded stem cell research. The Foundation now claims that the invalidation of one patent effectively invalidates the other two.
See discussion at Nature Blog The Great Beyond.
