Piramal Healthcare Ltd's chairman on Monday said he was not in merger talks with any firm, including Sanofi-Aventis, after a paper reported the French firm's plans to buy Piramal had failed. A proposed deal by France's Sanofi-Aventis to buy a majority stake in Piramal had fallen through on differences over valuation, the Economic Times reported on Monday, citing two people familiar with the development. “It is an incorrect report,” Ajay Piramal told Reuters. “There was no discussion of this nature with any company, including Sanofi.” In Februray, a source had told Reuters that GlaxoSmithKline Plc and Sanofi-Aventis were bidding for the Indian drug maker, with the sale price going as high as $1.5 billion. […]