New Delhi, May 20 -- IHH Healthcare's indirect subsidiary Northern TK Venture Pte Ltd (NTK) has increased its damages claim against Japanese pharma company Daiichi Sankyo Co. about tenfold to Rs.11,800 crore or $1.38 billion, over its obstructed open offer for Fortis Healthcare in 2018.

NTK has filed an application with the Tokyo District Court to amend its ongoing claim for damages against Daiichi Sankyo, it said on Tuesday.

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NTK filed a claim in October 2023, seeking damages of 20 billion yen from Daiichi Sankyo for allegedly obstructing its efforts to complete its open offers to acquire shares in Indian hospital chain Fortis Healthcare and its subsidiary Fortis...