SPPI. Spectrum Pharmaceuticals Announces the USPTO Has Granted Five-Year Extension for FOLOTYN® Patent FOLOTYN® (pralatrexate injection) is the first therapeutic to have been approved for peripheral T-cell lymphoma (PTCL), in September 2009 FOLOTYN net sales were approximately $50 million in 2011 Spectrum acquired FOLOTYN through acquisition of Allos Therapeutics on September 5, 2012 http://finance.yahoo.com/news/spectrum-pharmaceuticals-announces-uspto-granted-110000705.html