Who was the Chief Justice of India when public interest litigation (PIL) was introduced to the Indian Judicial System?

1. The question asks who was the Chief Justice of India (CJI) when Public Interest Litigation (PIL) was introduced into the Indian Judicial System. 2. Public Interest Litigation (PIL) gained prominence in India during the late 1970s and early 1980s. 3. Justice P.N. Bhagwati, along with Justice V.R. Krishna Iyer, is widely credited with pioneering the PIL movement in India. 4. Justice P.N. Bhagwati served as the Chief Justice of India from July 1985 to December 1986, but his significant contributions to PIL occurred both before and during his tenure as CJI, when the concept was being actively developed and accepted by the judiciary. 5. M. Hidayatullah, A.M. Ahmadi, and A.S. Anand served as CJI during different periods.