The National Company Law Tribunal has directed HDFC and the holding company, RHC Holding, to respond to Daiichi's plea before the next hearing on October 4, said lawyers present during the proceeding on Tuesday.
HDFC is seeking to recover outstanding dues worth Rs 41.1 crore from RHC.
Daiichi secured its arbitration award against the Singhs in 2016 after it alleged that the brothers concealed information regarding wrongdoing at Ranbaxy when selling the company to the Japanese firm for $4.6 billion in 2008.