** Mayne Pharma MYX.AX surge as much as 13.4% to A$6.50, biggest intraday jump since Feb 21
** Pharma co says court approves shareholder meet to vote on Cosette Pharmaceuticals buyout offer made on Feb 21
** Stock has not hit offer price of A$7.40/shr
** Has traded between A$7.31 high (Mar 21) and A$5.68 low (May 14)
** Stock last at A$6.36, with trading vol 4x the 30-day avg
(Reporting by Kumar Tanishk in Bengaluru)
((Tanishk.Kumar@thomsonreuters.com; X: @thatstanishk;))