OK..

So the bar is still high with regard to invalidity..

Obviousness standards are here..

http://www.uspto.gov/web/offices/pac/mpep/documents/2100_2141.htm

I think we would all agree and any reasonable person would agree that our patents are a novel and innovative step..(our opposing parties may disagree, but the PTO and a Jury / court would be the determining factor..I think "David" would prevail in this fight).

Infringement - there is the rub...do the products of the parties put on notice / involved in any of the lawsuits infringe? We rely heavy on TPL in this regard. How sound is their reverse engineering? My thoughts - some big players have paid for their alleged infringement already - with more continuing to sign - by signing the license agreement, it would imply that they in fact infringe (language in the license may say otherwise) - some would say..they are paying a nuisance fee...hogwash..I don't buy it IMO.