** InterDigital Inc IDCC.O shares climb 3% to $350.45
** Video, telecom and AI research firm wins contract from U.S. Department of War
** U.S. President Donald Trump has ordered Department of Defense to rename itself Department of War, a change that will require action by Congress.
** IDCC to work with partners DeepSig and Skylark Wireless on technologies that allow commercial 5G and future communication technologies to coexist in same frequency bands
** Co did not provide any financial details on the contract
** Analysts tracking IDCC rate it "buy" on average, media PT is $450 - data compiled by LSEG
** Up to Wednesday's close, stock is up 81% this year
(Reporting by Nandan Mandayam in Bengaluru)
((Nandan.Mandayam@thomsonreuters.com; Mobile: +91 9591011727;))