A bench of Chief Justice D N Patel and Justice Jyoti Singh listed the matter in August after Additional Solicitor General Balbir Singh, representing CCI, sought some time to respond to the pleas.
Senior advocate Harish Salve, representing WhatsApp, said if the CCI does not insist on filing a reply by August 5 to the June 4 notice asking it to furnish certain information in relation to the probe, they do not have a problem.
WhatsApp and Facebook, represented through senior advocate Mukul Rohatgi, have also challenged the CCI's June 4 and 8 notices respectively, asking them to furnish certain information for the purpose of inquiry conducted by it.
The high court listed the pleas for hearing on August 27, while extending the time to file replies to the June 4 and 8 notices issued by CCI to WhatsApp and Facebook, till then.
The division bench of the high court had on May 6 issued notices on the appeals and asked the Centre to respond to it.
The court had said it saw no merit in the petitions of Facebook and WhatsApp to interdict the investigation directed by the CCI.
The CCI had contended before the single judge that it was not examining the alleged violation of individuals' privacy which was being looked into by the Supreme Court.