Metropolitan Magistrate Chetna Singh granted the relief to the accused after his counsel submitted that Pachauri was suffering from severe Rheumatoid Arthritis (inflammation of joints) and he has gone to Mexico for treatment.
The magistrate said a detailed order would be passed later and posted the matter for hearing on October 25.
The plea was opposed by the complainant's counsel, who said these were "delaying tactics" on the part of the accused.
"But his condition was not improving," it said, adding that he had consulted a doctor in Mexico where he is currently undergoing some crucial tests.
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The application said Pachauri was to return on July 12 but "during examination by doctor, the condition of the disease of the accused was diagnosed to be critical and the doctor has directed certain urgent tests and procedures to be conducted."
It said Pachauri's non-appearance was due to his medical condition and "neither intentional nor deliberate."
Over 1,400-page charge sheet was filed by Delhi Police on March 1, 2016, saying there was "sufficient evidence" against Pachauri that he had sexually harassed, stalked and threatened the complainant.
A supplementary charge sheet was filed in March this year after the police said it retrieved several deleted emails and chats exchanged between the accused and the complainant.
The final report had said that deleted SMS and WhatsApp chats, text messages, retrieved from the cell phones, computer hard disks and other devices, were "not fabricated".
Besides these, sections 506 (threat) and 509 (teasing and using vulgar gesture and actions) were also included.
Pachauri had denied all the allegations against him.
On February 13, 2015 an FIR was registered against him and he was granted anticipatory bail in the case on March 21.
The former TERI chief had earlier secured an order from Additional District Judge that makes it mandatory for media houses to publish or telecast the coverage of the case with a title that "In any court the allegations have not been proved and they may not be correct."
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