In 2007, Thailand was involved in a dispute over the granting of compulsory licenses on medicines, including the patents used for Kaletra, an Abbott drug used in the treatment of AIDS. Kaletra is the brand name for a fixed dose combination of lopinavir and ritonavir (LPV/r) -- two drugs invented at Abbott on an NIH grant. In 2007, LPV/r was the preferred combination for protease inhibitor regimes used to treat AIDS.