RE:RE:We will see a very large and long spike this May, 2017VIXS patent portfolio - The portfolio assessment was followed in late 2015 by a general valuation assessment that was completed by Black Stone IP, LLC. Based on a discounted cash flow derived from a “relief from royalty” approach (and testing results against per-patent values from precedent patent sales), Black Stone estimated the range of value for the ViXS patent portfolio to be between $43 Million and $109 Million USD.