Source Vagabond Sys. Ltd v. Pearl Cohen Zedek Latzer LLP (Fed. Cir. June 5, 2014) is here. Judge Wallach (with KM and JR (not EW)) affirmed imposition of Rule 11 sanctions against the firm that had represented the patentee. Not a lot of new law, but it does make it clear that you’d better do a reasonable pre-suit investigation (claim charts not required always, but a good idea…) before you file a suit.