Image source: The Motley Fool. InterDigital Inc (NASDAQ: IDCC) Q4 2018 Earnings Conference Call Feb. 21, 2019 10:00 a.m. ET Contents: Prepared Remarks; Questions and Answers; Call Participants Prepared Remarks: Operator. Good day, and welcome to the InterDigital Fourth Quarter 2018 Earnings Call. This call is being recorded.