That's only the rub if the plaintiff is a producing entity. Some of the patent litigation has been from NPE's, and in others I can't imagine that there is often

That's only the rub if the plaintiff is a producing entity. Some of the patent litigation has been from NPE's, and in others I can't imagine that there is often a tit-for-tat counter suit opportunity. My gut feel is that this article is taking a hot topic (the twitter IPO) and blowing one angle of it out of proportion.