The agreement was at the heart of a settlement between the government and Gilead over patents for HIV prevention

An AIDS activist group filed a lawsuit against the Trump administration for failing to disclose a research and development agreement that was at the heart of a settlement between the U.S. government and Gilead Sciences over patents for HIV prevention.

The settlement resolved a contentious lawsuit that was filed six years ago by the previous Trump administration after the Centers for Disease Control and Prevention maintained that Gilead infringed its patent rights. The agency had helped fund academic research that later formed the basis for two Gilead HIV pills, Truvada and Descovy.