The Patent Trial and Appeal Board (PTAB) saw activity in AIA reviews against a variety of familiar plaintiffs in September, including validity challenges brought in campaigns targeting wireless communications technology and mobile devices. Among the NPEs hit with petitions for inter partes review (IPR) in September were Intellectual Ventures LLC, which continues to pursue its existing litigation as it divests other parts of its portfolio; and entities controlled by Fortress Investment Group LLC and Uniloc Corporation Pty. Limited, both of which have kept up a barrage of new litigation asserting former Pendrell Corporation patents. Also in September, the PTAB instituted trial in IPRs against Quarterhill Inc. and an NPE related to PanOptis Equity Holdings LLC, and issued final decisions against private plaintiffs including General Patent Corporation.

The Patent Trial and Appeal Board (PTAB) saw activity in a variety of notable campaigns throughout February 2018, with petitions for inter partes review (IPR) filed against publicly traded Quarterhill Inc. as well as Fundamental Innovation Systems International LLC, Intellectual Ventures LLC, Realtime Data LLC, and Uniloc Corporation Pty. Limited. The Board also instituted trial in February for IPRs against General Patent Corporation, Oyster Optics, LLC, and Uniloc. In addition, the PTAB issued final decisions throughout February in IPRs against a range of different patent owners, including publicly traded NPEs (Acacia Research Corporation; InterDigital, Inc.; and VirnetX Inc.), an individual inventor (Daniel L. Flamm), and privately held plaintiffs (ChanBond, LLC; Makor Issues & Rights Ltd.; Papst Licensing GmbH & Company Kg; and Personalized Media Communications, LLC).