The general objective of this study is to investigate the erectile dysfunction pharmaceutical market over the past two decades (1990–2010) through patent data analysis. The study of the erectile dysfunction market allows the analysis of the technological trajectory of Viagra® in its several...

The United Nations Framework on Climate Change (UNFCCC) took effect as a treaty in 1994 to promote international cooperation in the fight against global warming. Currently, nearly 190 countries are signatories of the UNFCCC, which has had successive additions as the Kyoto Protocol (1997). In...