Thomas Folks spent years in his U.S. Centers for Disease Control and Prevention lab developing a treatment to block deadly HIV in monkeys. Then San Francisco AIDS researcher Robert Grant, using $50 million in federal grants, proved the treatment worked in people who engaged in risky sex.

Their work — almost fully funded by U.S. taxpayers — created a new use for an older prescription drug called Truvada: preventing HIV infection. But the U.S. government, which patented the treatment in 2015, is not receiving a penny for that use of the drug from Gilead Sciences, Truvada’s maker, which earned $3 billion in Truvada sales last year.

Gilead argues that the government’s patents for Truvada for PrEP, as the prevention treatment is called, are invalid. And the government has failed to reach a deal for royalties or other concessions from the company — benefits that could be used to distribute the drug more widely.

“With the amount of effort and time and taxpayer money that went into it, for CDC and Gilead not to come to an agreement, so the taxpayer could get some of that money, is really unconscionable,’’ said Folks, who is retired. Read more via Washington Post