After reading the pre-trial briefs from the state attorneys general, Cowen macro analyst Paul Gallant believes the states are likely to prevail in their case to block the proposed meeting between T-Mobile (TMUS) and Sprint (S). The trial starts next Monday, December 9, and the analyst pegs the chances of the states winning at 60%. The wireless market concentration likely will create a presumption of harm that won't be easy for T-Mobile to overcome given court precedent and the Department of Justice's own analysis of the merger, Gallant tells investors in a research note. Shares of T-Mobile are down 1% in early trading to $77.77 while Sprint is down 2% to $5.82.