PERMANENT COURT OF INTERNATIONAL JUSTICE

JURISDICTION

1) Voluntary jurisdiction – a system that limited jurisdiction to particular disputes submitted to the Court by an agreement made ad hoc after the dispute had already arose.

2) Compulsory jurisdiction – a system whereby a number of States agreed by means of a convention to confer jurisdiction upon the Court in all disputes which could potentially arise between them, and to allow reference of each particular dispute to the Court by unilateral application of either party to the dispute.

Conditions that should have been satisfied by a dispute in order to be suitable for inclusion:
1) found impossible to be settled by diplomatic means;
2) not submitted to another court/tribunal;
3) was a case of a "legal nature", i.e. it should have been regarding:
  a) interpretation of a treaty;
  b) any question of international law;
  c) existence of any fact which, if established, would constitute a breach of an international obligation;
  d) nature or extent of reparations to be made for the breach of an international obligation;
  e) interpretation of a decision of the Court.

Jurisdiction under treaties could arise from:
1) The Covenant of the League of Nations ;
2) The Peace Treaties (other than #1 or #3);
3) protection of minorities;
4) mandates;
5) collective international conventions of a "legislative" character;
6) political treaties (of alliance, commerce, etc.);
7) bilateral conventions concerning transit and communications;
8) treaties of arbitration and conciliation.

The Covenant provided that:
Article 13: the members of the League of Nations were obliged to submit to arbitration or judicial settlement any dispute that would arise between them which they recognized to be suitable for such submission and which could not be satisfactorily settled by diplomacy. The other party could defeat the jurisdiction by refusing to recognize the suitability of the dispute for such procedure. In this case, the members of the League of Nations should have submitted this matter to the Council, by means of a notice.
Article 14: the Court was given a power to give advisory opinions.

The Statute provided that only States or members of the League of Nations could be parties in cases before the Court. Hence, private persons, whether natural or corporate could not appear as parties before the Court, including sovereign rulers, ex-sovereigns, public bodies and officials etc. Although it was possible for a government to take up a claim of its citizen or corporation against another government (e.g. a nation under protectorate or Mandate, or minorities under special circumstances). British Dominions and India, and any other fully self-governing Dominion or Colony which could become a Member of the League of Nations, were entitled to appear before the Court irrespective of whether or not they could be described as States. States could not be refused access to the Court, even if its sovereignty was subject to limitations, unless the sovereignty was completely in the hands of another State, in which case the protecting or mandatory State would be the party before the Court.

The Court was opened to the members of the League of Nations and states mentioned in the Annex to the Covenant, even if they had not ratified the Protocol of Signature. 
If a member of the League of Nations mentioned in the Annex to the Covenant were to retire from the League of Nations it would still continue to enjoy the unconditional right of access under that paragraph. The Court was open to the states-non-members of the League of Nations and not mentioned in the Annex to the Covenant only on the conditions laid down by the Council acting under Article 35 (2) of the Statute. The conditions referred to in Article 35 (2) were laid down by a resolution of the Council of May 17, 1922, which provided for the deposit of a declaration accepting the jurisdiction of the Court in accordance with the covenant and becoming subject to the conditions of the Statute and Rules of Procedure of the Court. The declaration could have been either particular (i.e. in respect of the dispute which had already arisen) or general (i.e. in respect of all disputes or certain types of disputes).

The following are the States neither Members of the League nor mentioned in the Annex to the Covenant, which were entitled to appear before the Court under Article 35 (2): Afghanistan, Free City of Danzig, Egypt, Georgia, Iceland, Liechtenstein, Monaco, Russia and San Marino, as well as Costa Rica, which was not mentioned in the Annex and had retired from the League of Nations.