"The chief executive of Amgen forecast on Monday that "smart" biotechnology companies may be able to retain up to half the sales of their drugs once they face competition from cheaper so-called biosimilars...Conventional drugs can lose up to 90 percent of their sales within a year once they face generic competition, in part because many companies often begin selling heavily discounted copycat formulations. By contrast, relatively few companies are now capable of making generic forms of biotech drugs"
that's what i speculated would happen to the lovenox market if there were only one generic entrant (rather than dew's 80/20 model)