BUZZ-Indivior: Shares plummet on U.S. court patent ruling
** Indivior (Frankfurt: 2IVA.F - news) 's shares down 22 pct after U.S. Court finds would-be generic competitor Alvogen had not infringed three of its patents
** Co says will fight the ruling, believes it has grounds to appeal
** INDV shares bottom of FTSE Mid Cap; fall as much as 23.5 pct
** "Unless the generic maker launches at risk, these patents would need to be litigated first, a process which could take two years," Morgan Stanley (Xetra: 885836 - news) believes
** Jefferies says impact of ruling is less significant given that Dr Reddy's Labs is still the most likely to launch a generic first
** "Any market over-reaction would be a good buying opportunity," Jefferies says