That is probably an accurate time frame, because IDCC has not yet initiated any litigation on 4G. All you have to do is look at history to see that the bulk of their revenue came as the result of years of litigation. And Samsung, the most significant portion of IDCC revenues, caved in advance of an unfavorable decision. Samsung would have been able to get off scott free like Nokia.
So, as we all know, the major players do not license with IDCC unless it is for a minimal rate, or as a result of years of litigation. So, once IDCC initiates 4G litigation, then add about 5 to 10 years to that, and then maybe they will see some significant 4G revenue.