The following is from an Evercore ITC filing on 4/20/2012. This says a lot. The caps were added by me for inference.
In its supoena dated January 6, 2012 Nokia sought documents and correspondence related to or evidencing valuations Interdigital Inc's (Interdigital) patent portfolio. Evercore was engaged by Interdigital as a financial advsior in connection with evaluating a sale of all or part of the equity, business or assets of Interdigital and a potential commercial agreement with Nokia. After several discussions with Nokia's counsel regarding the approrpriate scope of the subpoena. Evercore agreed to produce dcouments relating to the value of Interdigital's patent portfolio during the time that Evercore was advising Interdigital
with respect to a NOKIA SETTLEMENT and during Interdigital's strategic review.