The Patent Trial and Appeal Board was recently faced with a set of cases where the patent owner assigned its patents to a third party during the pendency of inter partes review (IPR) proceedings. The Board's comments suggest that the new assignee would not be permitted to replace the named patent owner as a participant in the IPR (Librestream Techs, Inc v Wireless Remote Sys LLC, IPR2014-00368 (Paper 15) and IPR2014-00369 (Paper 16) (October 10 2014)).