This is a company that is so disruptive to the industry that there are most likely a lot of behind the scene players deliberately depressing the SP. Just look at the activity with Anadigics and Epiworks when it was revealed that they were involved with the POET product launch and the delayed effects on the AOC development

And maybe this is one reason POET is so quiet about its working relationships - if discovered before POET is ready to make a PR, the relationship itself can be disrupted... see: Anadigics. Deep-pocketed competitors can just throw some money around and retard POET's progress.