ROCKLAND, Mass.--(BUSINESS WIRE)--EMD Serono, Inc., an affiliate of Merck KGaA, Darmstadt, Germany, announced today that James Hoyes has been appointed President of EMD Serono. In this capacity, he will be responsible for driving the strategic direction of the US commercial organization as well as managing the day-to-day business of the US affiliate of Merck KGaA. Mr. Hoyes will also serve as a member of the Executive Management Board for Merck Serono, the global pharmaceuticals division of Merck KGaA.