Public Interest Litigation has expanded access to justice by allowing individuals or groups to approach courts on behalf of those unable to do so themselves. It focuses on issues affecting society at large, such as environmental protection, human rights, and social justice. Through this mechanism, the judiciary addresses concerns of marginalized and disadvantaged sections. Public Interest Litigation reduces procedural barriers and emphasizes substance over technicalities. It has strengthened the role of the judiciary as a protector of public welfare and has contributed significantly to social transformation in India.