Special Judge A S Shende convicted Panwar under Sections 302(murder) and 326B (Voluntarily throwing acid) of the IPC and is likely to hear arguments on the quantum of sentence tomorrow.
Rathi, who hailed from Delhi, had died of multiple organ failure after hotel management graduate Panwar threw acid on her in May 2013.
According to police, Rathi had secured a nursing job with the Ministry of Defence at the INHS Asvini Hospital and Panwar was unhappy over it.
Police said acid was thrown on Rathi as Panwar was jealous of her career growth.
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"We have been implicated just because we were poor. I want a CBI inquiry into the case," she said.
Meanwhile, Rathi's father Amar Singh Rathi hoped Panwar was awarded capital punishment.
"It took 3 years for us to get justice but I am happy that it has been finally delivered. I hope he gets death sentence," he said.