** Shares of Australia's IPH IPH.AX slide as much as 5.4% to A$3.5, posting their biggest intraday pct loss since August 28
** Intellectual property services co announces retirement of CEO and MD Andrew Blattman after 30 years with the company
** Shares hit their lowest level since October 22
** YTD, shares down 29.7%
($1 = 1.5389 Australian dollars)
(Reporting by Nichiket Sunil in Bengaluru)
((Nichiket.Sunil@thomsonreuters.com))