Adultery was decriminalised and Section 497 was declared as unconstitutional as violative of Article 14, 15 and 21 of the Constitution. This was decided in the case of:
1
Navtej Singh Johar v. Union of India, AIR 2018 SC 4321
2
Joseph Shine v. Union of India, AIR 2018 SC 4898
3
Suresh Kumar Koushal v. Naz Foundation, AIR 2014 SC 563
4
National Legal Services Authority v. Union of India, AIR 2014 SC 1863