Confused
So part of Yahoo's defence against Facebook's counter claims is that you're allowed to infringe on someone else's patents as long as you do so secretly? Even better, it seems that you can then defend yourself against allegations of infringement by asserting that the other party must have stolen your trade secrets in order to know about such infringments?
IANAL (thankfully) but surely saying that you were (or, at least, *may* be) infringing *secretly* isn't really much of a defence?