In Public Interest Litigation (PIL), anyone, including an individual, group, or organization, can file a petition to address public wrongs or injuries, even if they are not directly affected by the issue. Locus standi, the legal requirement for a party to have a valid interest in a case, has been relaxed in the context of PIL, allowing individuals or groups to represent the interests of those who cannot represent themselves.

Any citizen of India, or any public-spirited individual or organization, can file a Public Interest Litigation (PIL) before the Supreme Court under Article 32 or the High Court under Article 226, provided the issue concerns public interest and benefits the public at large. It is not necessary for the petitioner to have a direct personal interest in the matter.

Locus standi means the legal right or standing to sue. In regular litigation, only an aggrieved party can approach the court. However, in PIL, the requirement of locus standi is relaxed—any person or group genuinely concerned about public interest can file, especially for those who cannot approach the court themselves.