Congressional Letter to Fannie Mae Regarding their Patent on Residential Emissions Trading

May 13, 2010

It was recently brought to our attention that Fannie Mae’s former CEO, Franklin Raines, is credited with patenting a system for residential emissions trading (Patent No. 6,904,336). The patent was filed with the US Patent and Trademark Office on November 9, 2002, and issued on June 7, 2005. The patent was assigned to Fannie Mae and, LLC.

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