Perhaps there was a conflict of philosopy between TPL and the current lawyers (may have been too agressive) and all the parties. All of the settlements to date that TPL has made have adhered to the following (and they have always been very generous in terms)

From TPL website.

The TPL Group is a purpose-built boutique that specializes in the development, commercialization and management of IP assets as well as the leveraging of those assets to drive advanced product development. Since its founding in 1988, the Silicon Valley based company has logged a solid track record in optimizing IP Portfolio value and protecting IP assets. Adhering to a fundamental strategy of building relationships and implementing win-win transactions, the TPL Group has earned its reputation as a true business partner. The TPL Group's world class resources include:

AJMO