Based on our limited "experience" with Matsushita in this case, fighting until there is little chance of success in litigation (risk overwhelming) and avoiding settlement until the settlement amount probably neared its peak, it's no surprise that they consistently insist on an NDA. I can't imagine any entity willing to let the world know that they ended up paying 5-10 times what they could have gotten away for had they settled sooner. To my way of the thinking, the tighter the lips, the more they paid. The lips are tight, held by a vise grips! I mean really, not even acknowledging a "settlement", but a "business resolution" (same meaning, softer words IMO).
JMHO,
SGE