Following a mistrial in early 2014, Intellectual Ventures (IV) and Motorola Mobility were back in front of a jury this week in their more than four-year battle over wireless technology patents. On Wednesday, in the first of what will be two separate trials covering a total of three patents, a Delaware jury handed over a mixed verdict. Motorola’s smartphones were found to have infringed a single claim of a patent related to file transfer between devices (claim 41 of 7,810,144). However, while the jury rejected the company’s efforts to invalidate the ‘144 patent, it agreed that the asserted claims of the second patent at issue (7,409,450), related to a packet-centric wireless communications system, are invalid as obvious. A second trial, focused on a third patent (7,120,462), kicked off on Thursday.