In March 2018, the Patent Trial and Appeal Board (PTAB) saw petitions for inter partes review (IPR) filed in a variety of notable campaigns, including those waged by publicly traded Quarterhill Inc.; privately held XR Communications, LLC; and inventor Leigh M. Rothschild. The Board also instituted trial throughout March in campaigns brought by Oyster Optics, LLC and Uniloc Corporation Pty. Limited. In addition, the PTAB granted in March a motion to amend in two IPRs against prolific plaintiff Realtime Data, LLC, also issuing final decisions involving patents asserted by Uniloc; Papst Licensing GmbH & Company Kg; Evolved Wireless LLC; Game and Technology Co., Ltd; and TQ Delta LLC.