P.N. Bhagwati was the chief justice of India when public interest Litigation (PIL) was introduced to the Indian judicial system. The concept of Public Interest Litigation (PIL) is in consonance with the principles enshrined in Article 39A of the Constitution of India to protect and deliver prompt social justice with the help of law. Justice P. N. Bhagwati and Justice V. R. Krishna Iyer were among the first judges to admit PILs in court. M. Hidayatullah - 11th chief Justice of India. He also served as Vice President and acting President of India. A.M. Ahmadi - 26th Chief Justice of India. Ex vice chancellor of AMU (1994-1997). A.S. Anand - 29th Chief Justice of India (1998-2001).