exceuse me but i believe TPL sold the bulk of the shares at the first chance they had...i could be wrong but this is my recollection......tpl has no interest in ptsc other than they are baggage required for them to carry as they grow their company.  the money to be earned from the patent portfolio is/will be huge.....plenty for TPL to grow their company.  ptsc is just a blowin in the wind.

teremoto