California’s $3-billion stem cell program has encountered repeated setbacks since it was approved by voters 17 months ago. Now it faces an entirely new and potentially even more worrisome challenge arising from two powerful patents ââ?¬â? patents No. 5,843,780 and No. 6,200,806, to be exact ââ?¬â? which cover all human embryonic stem cells and the method by which they’re made.
Patents are supposed to stimulate innovation. That’s why they exist. But it appears that these two patents, held by a foundation affiliated with the University of Wisconsin, may exert a dangerous monopoly over all future research in the field ââ?¬â? one that may pose an even greater long-term threat to stem cell science than the Bush administration’s federal funding ban.