Interesting read. Again the full GAO Report is here. The report is more balanced than I would have expected, pointing the finger largely at software patents, patent quality, and litigation costs, not NPEs.
I know that Chief Judge Rader is doing his level best to try to reduce costs, as are many members of the judiciary, through model orders and the like. When it comes to these costs, lawyers on both sides of the v have responsibilities.
The plaintiff's side's responsibilities have been written about a lot: primarily the need for adequate pre-suit investigation including careful infringement analysis.
The defense side's responsibilities are less often talked about (I think). Defense lawyers paid by the hour can have conflicting interests: there may be a clear path to dismissal of a suit or early settlement, but the billable hour is in tension with that result, at least where the client is not sophisticated enough in patent litigation to guard against that problem. A while back, I was asked to write about the problem of trolls, and, not by design but through analysis, concluded that defense counsel faced some serious issues. The article is here.
Now to work on the article about Section 285, which I think is the flexible solution to a lot of problems -- despite the Federal Circuit's decision in Brooks Furniture!