Who may file a lawsuit to inform protection in a lawsuit?

In a lawsuit, individuals or entities that have a direct interest in the case, known as "parties," may file a lawsuit to seek protection. This includes plaintiffs who are directly affected by the issue at hand and may also extend to intervenors—third parties who can demonstrate that they have a stake in the outcome. Additionally, organizations or advocacy groups may file lawsuits on behalf of affected individuals to address broader issues of public interest.