Introduction

The expression ‘Public Interest Litigation’ has been borrowed from American jurisprudence, where it was designed to provide legal representation to previously unrepresented groups like the poor, the racial minorities, unorganised consumers, citizens who were passionate about the environmental issues, etc.PIL is not defined in any statute or in any act. It has been interpreted by judges to consider the intent of public at large.
Public interest litigation (PIL) refers to litigation undertaken to secure public interest and demonstrates the availability of justice to socially-disadvantaged parties and was introduced by Justice P. N. Bhagwati. It is a relaxation on the traditional rule of locus standi.The liberal interpretation of locus standi where any person can apply to the court on behalf of those who are economically or physically unable to come before it has helped. Judges themselves have in some cases initiated suo moto action based on newspaper articles or letters received.
Some Landmark Judgements
• In December 1979, Kapila Hingorani filed a petition in regards to the condition of the prisoners detained in the Bihar jail, whose suits were pending in court. The petition was signed by prisoners of the Bihar jail and the case was filed in the Supreme Court of India before the bench headed by Justice P. N. Bhagwati. The petition was filed under the name of a prisoner, Hussainara Khatoon, and the case was therefore named Hussainara Khatoon Vs State of Bihar. The Supreme Court decided that prisoners should receive free legal aid and fast hearings. As a result, 40,000 prisoners were released from jail. Thereafter many similar cases have been registered in the Supreme Court. It was in the case of SP Gupta vs Union of India that the Supreme Court of India defined the term “public interest litigation” in the Indian context.
The concept of public interest litigation (PIL) is suited to the principles enshrined in Article 39A of the Constitution of India to protect and deliver prompt social justice with the help of law. Bhagwati and Justice V. R. Krishna Iyer were among the first judges to admit PILs in court.
A new era of the PIL movement was heralded by Justice P.N. Bhagawati in the case of S.P. Gupta vs. Union of India.
- In this case it was held that “any member of the public or social action group acting bonafide” can invoke the Writ Jurisdiction of the High Courts (under article 226) or the Supreme Court (under Article 32) seeking redressal against violation of legal or constitutional rights of persons who due to social or economic or any other disability cannot approach the Court.
- M.C Mehta vs. Union of India: In a Public Interest Litigation brought against Ganga water pollution so as to prevent any further pollution of Ganga water. Supreme Court held that petitioner although not a riparian owner is entitled to move the court for the enforcement of statutory provisions, as he is the person interested in protecting the lives of the people who make use of Ganga water.
- Vishaka v. State of Rajasthan: The judgement of the case recognized sexual harassment as a violation of the fundamental constitutional rights of Article 14, Article 15 and Article 21. The guidelines also directed for the Sexual Harassment of Women at Workplace (Prevention, Prohibition and Redressal) Act, 2013.

Who Can File a PIL and Against Whom?
- Any citizen can file a public case by filing a petition:
- Under Art 32 of the Indian Constitution, in the Supreme Court.
- Under Art 226 of the Indian Constitution, in the High Court.
- Under sec. 133 of the Criminal Procedure Code, in the Court of Magistrate.
- However, the court must be satisfied that the Writ petition fulfils some basic needs for PIL as the letter is addressed by the aggrieved person, public spirited individual and a social action group for the enforcement of legal or Constitutional rights to any person who are not able to approach the court for redress.
- A Public Interest Litigation can be filed against a State/ Central Govt., Municipal Authorities, and not any private party. The definition of State is the same as given under Article 12 of the Constitution and this includes the Governmental and Parliament of India and the Government and the Legislature of each of the States and all local or other authorities within the territory of India or under the control of the Government of India.

Conclusion
Public Interest Litigation is working as an important instrument of social change. It is working for the welfare of every section of society. It’s the sword of every one used only for taking the justice. The innovation of this legitimate instrument proved beneficial for the developing country like India. PIL has been used as a strategy to combat the atrocities prevailing in society. It’s an institutional initiative towards the welfare of the needy class of the society.

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