Justice Suresh Kait refused to quash the charges framed against Kumar and the other accused by a trial court in the case relating to the killings of six persons in Delhi's Sultanpuri area.
The court also dismissed the plea of complainant Sheela Kaur, a riot victim who had filed a cross-appeal seeking to invoke an additional charge of criminal conspiracy against Kumar and four others in the case.
"All (pleas) dismissed," Justice Kait said.
With the today's verdict, the trial against all the five accused will resume in the lower court.
In July 2010, the lower court had framed charges against Kumar, Brahmanand Gupta, Peru, Khushal Singh and Ved Prakash in connection with the case of killing of six persons in the riots that occurred after the assassination of then Prime Minister Indira Gandhi on October 31, 1984.
Besides charges of murder and rioting, the trial court had also framed charges for the offence of spreading enmity between two communities against the accused in the case.
A lower court had recently acquitted Kumar in another 1984 anti-Sikh riots case.
However, five other accused were held guilty for offences including murder and for being a part of the mob that killed five Sikhs at Delhi Cantonment.
