Optimer Pharmaceuticals, Inc.

Asian Activities Report for December 14, 2011 includes: Coach, Inc. (NYSE:COH) (HKG:6388) has opened its first official online store in China on Taobao Mall; Japan-based global IT giant NTT Data Corporation (TYO:9613) has opened a childcare centre, named "Egg Garden" at its headquarter in Toyosu, Koto-ku, Tokyo, Japan; Shiseido (TYO:4911) has announced its intent to sell bareMinerals makeup products in Brazil; Astellas Pharma Inc. (TYO:4503) and Optimer Pharmaceuticals, Inc. (NASDAQ:OPTR) announced that the European Commission has granted a marketing authorisation for DIFICLIR(TM) tablets for the treatment of adults aged 18 years and older with Clostridium difficile infections (CDI) in the European Union.