The timeline of the Section 377 jurisprudence is as follows:
In 2009, the Delhi High Court, in the case of Naz Foundation v. Govt. of NCT of Delhi, delivered a landmark judgment decriminalizing consensual homosexual acts between adults by holding Section 377 of the IPC to be unconstitutional to that extent.
In 2013, the Supreme Court, in the case of Suresh Kumar Koushal v. Naz Foundation, heard an appeal against the Delhi High Court's judgment. The Supreme Court reversed the High Court's decision, re-criminalizing homosexuality and stating that it was up to the Parliament to legislate on the matter.
Finally, in 2018, in *Navtej Singh Johar v. Union of India*, the Supreme Court overruled its own decision in *Suresh Kaushal* and decriminalized homosexuality.
The question specifically asks for the case where the Supreme Court reversed the Delhi High Court's pronouncement. That case is *Suresh Kaushal v. Naz Foundation*.