Public Interest Litigation
Public Interest Litigation in High Court or Supreme Court
Both the High court and supreme court have the power to entertain a PUBLIC INTEREST LITIGATION
Since there are no statutes or rules, there cannot be a specific difference, as to which court will have jurisdiction on the PUBLIC INTEREST LITIGATION
It will purely and solely depend on the "Nature of the case", if the question involves only a small group of people being effected by action of State authority, the PUBLIC INTEREST LITIGATION can be filed in high court. For e.g. if there is a sewage problem in a locality effecting 50 families, the PUBLIC INTEREST LITIGATION can be filed in High court.
If a large section of people is effected whether by State Government or Central Government, PUBLIC INTEREST LITIGATION can be filed in Supreme Court For e.g. placing a ban on adult movies, prohibition industrial unit from causing pollution etc.