
After a lengthy regulatory back-and-forth, Eisai and Biogen's Alzheimer's drug is on the market in Europe. Elsewhere, Sandoz is alleging Amgen's patent actions were anticompetitive.

After a lengthy regulatory back-and-forth, Eisai and Biogen's Alzheimer's drug is on the market in Europe. Elsewhere, Sandoz is alleging Amgen's patent actions were anticompetitive.