J cali....sorry I just saw your post. yes a case number has been assigned. see below. the latest update was the change in judges which I saw as a good thing as Andrews is a good judge. he just recently rendered an opinion and was very adamant the burden of proof is on the petitioner.
Delaware District Court Judge: Richard G Andrews Case #: 1:17-cv-00392 Nature of Suit 830 Property Rights - Patent Cause 35:271 Patent Infringement