"I am beginning to have some concerns about how long it is taking."

Not you....DM has been on board less than a year, has already filed its first patent infringement suit and Blakeley has stated just over a month ago, the following....

“Our intellectual property team is finalizing detailed legal and technical documentation to support additional Flash-R™ patent portfolio enforcement actions against a broad range of companies,” added Blakeley. “To date, we have identified annual U.S. revenues of more than $20 billion from what we believe are infringing products from such companies. Our robust intellectual property portfolio addresses vital aspects of the use of removable flash memory in portable devices, and we believe the number of infringing companies and associated revenues continues to grow annually.” 

But then why be positive regarding your financial stake in such an investment when one can be cautiously optimistic?