A federal judge in San Francisco has unequivocally ruled against a non-practicing entity that had sued Cloudflare for patent infringement. From a report: The judicial order effectively ends the case that Blackbird -- which Cloudflare had dubbed a "patent troll" -- had brought against the well-known security firm and content delivery network. "Abstract ideas are not patentable," US District Judge Vincent Chhabria wrote in a Monday order. The case revolved around US Patent No. 6,453,335, which describes providing a "third party data channel" online. When the case was filed in May 2017, the invention claims it can incorporate third-party data into an existing Internet connection "in a convenient and flexible way."