India's thriving paints sector seeing increased competition Two rivals locked in new antitrust case, sources say Birla antitrust challenge alleges abuse of position by rival Asian Paints asks watchdog to hold discussion, letter shows NEW DELHI, June 6 (Reuters) - Aditya Birla Group's Indian paints venture has filed an antitrust complaint against market leader Asian Paints for allegedly abusing its market position, three sources said, a case that could lead to a stand off between the two...