Revenue from the Company’s Remote Power Patent constituted 100% of the Company’s revenue for the three months ended March 31, 2020 and March 31, 2019. Revenue from five licensees constituted approximately 99% of the Company’s revenue for the three months ended March 31, 2020. Revenue from four licensees constituted approximately 80%, of the Company’s revenue for the three months ended March 31, 2019. At March 31, 2020, royalty receivables from four licensees constituted in the aggregate approximately 97% of the Company’s royalty receivables. At December 31, 2019, royalty receivables from four licensees constituted in the aggregate approximately 90% of the Company’s royalty receivables.