The Dutch brewing group, Heineken, is taking legal action to block the US$600m acquisition by the Brazilian drinks group, Ambev, of a 36% stake in the Argentine brewer, Quilmes Industrial SA (Quinsa). Heineken owns a 15% stake and Quinsa an 85% stake in Quilmes International Bermuda (QIB) which groups the Quilmes operations. Heineken had said in February that it was interested in raising its stake in QIB.