In a blow to King Pharmaceuticals, a judge at the U.S. District Court in New York invalidated two of three patents for the drugmakers' top selling drug, muscle relaxant Skelaxin. The patent challenge ...

NEW YORK, Jan 21 (Reuters) - A U.S. court has invalidated two patents related to King Pharmaceuticals Inc's Skelaxin muscle relaxant, King said on Wednesday, sending its shares down about 8 percent as ...

Princeton, NJ, May 20, 2010 - Sandoz today announced the launch in the US of the first generic version of metaxalone tablets, a generic equivalent of Skelaxin®, enjoying 180-day ANDA exclusivity.

Elan shares rallied in New York yesterday after US competition authorities dropped part of an investigation into whether it had blocked generic rivals to its muscle relaxant, Skelaxin, an inquiry that ...