…Maca growers and indigenous organizations were outraged when…PureWorld Botanicals [bought by Naturex in 2005], received a US patent for exclusive commercial distribution of an extract of maca's active libido-enhancing compounds…The Convention on Biological Diversity…entitled nations to a share of the profits from substances yielded by their flora and fauna. It was [not] ratified by…the United States…[S]ome of the world's poorest countries…[are]…fighting to apply the convention to international patent law…Naturex's marketing manager…says its patent lets [indigenous people] "grow, sell, and use maca…"…Naturex is offering to grant free licenses to Peruvian companies to use MacaPure...[Article also refers to Wyeth, Bristol-Myers Squibb, Elan Pharmaceuticals]