This report is dedicated to Ritonavir - an antiretroviral drug used to treat HIV infection and AIDS. A major goal of the report is to highlight the technology timeline for Ritonavir from the first filing of this compound to the present filings. It identifies a number of innovation tracks derived from the first Ritonavir patent document. The report also includes an analysis of statistical trends. A comprehensive explanation of the search methodology and history (including all search queries), and of the evaluation of the search results is included and illustrates how patent information can be retrieved and exploited in the area of pharmaceuticals.