Watson to sell generic Endo pill

The drugmaker settled a patent infringement lawsuit from Endo Pharmaceuticals (NMS:ENDP) and will sell a generic version of Endo's Opana ER painkilling pill in Sept. 2012, a year before patents on the drug start to expire. Watson Pharmaceuticals (NYSE:WPI - News) is getting a royalty-free license to Opana patents. Endo's combined sales of the pill and its injectable version totaled $230.6 mil in 2009. Watson edged up 0.4% to 44.42. Endo gained 4 cents to 34.18.