EMD 1201081 in combination with cetuximab will be evaluated for antitumor activity in subjects by examining its effects on accepted clinical endpoints. Progression-free survival (PFS) will be evaluated in subjects treated with EMD 1201081 plus cetuximab compared to cetuximab alone in cetuximab-naïve subjects with R/M SCCHN who have progressed on a cytotoxic therapy.