Stem Cell Patents To Face PTO Scrutiny

Law360 (October 4, 2006, 12:00 AM EDT) -- The U.S. Patent and Trademark Office will reexamine three University of Wisconsin patents on human embryonic stem cells, meaning they could eventually be revoked or modified.

The news, announced Tuesday, was a victory for the Public Patent Foundation and the Foundation for Taxpayer and Consumer Rights, which first challenged the patents this July.

According to the two groups, third-party requests for patent reexamination are successful about 70% of the time.

“We’re pleased the PTO has decided to re-examine these patents,” said John M. Simpson, the stem...
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