A division bench of Apex Court gave these interpretations to the various conditions under Section 13 of C.P.C. while deciding a foreign judgment is enforceable in India or not.

From Para 12,

12. We believe that the relevant provisions of Section 13 of the Code are capable of being interpreted to secure the required certainty in the sphere of this branch of law in conformity with public policy, justice, equity and good conscience, and the rules so evolved will protect the sanctity of the institution of marriage and the unity of family which are the corner stones of our societal life.

Clause (a) of Section 13 states that a foreign judgment shall not be recognised if it has not been pronounced by a court of competent jurisdiction. We are of the view that this clause should be interpreted to mean that only that court will be a court of competent jurisdiction which the Act or the law under which the parties are married recognises as a court of competent jurisdiction to entertain the matrimonial dispute. Any other court should be held to be a court without jurisdiction unless both parties voluntarily and unconditionally subject themselves to the jurisdiction of that court. The expression “competent court” in Section 41 of the Indian Evidence Act has also to be construed likewise.

Clause (b) of Section 13 states that if a foreign has not been given on the merits of the case, the courts in this country will not recognise such judgment. This clause should be interpreted to mean (a) that the decision of the foreign court should be on a ground available under the law under which the parties are married, and (b) that the decision should be a result of the contest between the parties. The latter requirement is fulfilled only when the respondent is duly served and voluntarily and unconditionally submits himself/herself to the jurisdiction of the court and contests the claim, or agrees to the passing of the decree with or without appearance. A mere filing of the reply to the claim under protest and without submitting to the jurisdiction of the court, or an appearance in the Court either in person or through a representative for objecting to the jurisdiction of the Court, should not be considered as a decision on the merits of the case. In this respect the general rules of the acquiescence to the jurisdiction of the Court which may be valid in other matters and areas should be ignored and deemed inappropriate.

The second part of clause (c) of Section 13 states that where the judgment is founded on a refusal to recognise the law of this country in cases in which such law is applicable, the judgment will not be recognised by the courts in this country. The marriages which take place in this country can only be under either the customary or the statutory law in force in this country. Hence, the only law that can be applicable to the matrimonial disputes is the one under which the parties are married, and no other law. When, therefore, a foreign judgment is founded on a jurisdiction or on ground not recognised by such law, it is a judgment which is in defiance of the Law. Hence, it is not conclusive of the matters adjudicated therein and therefore, unenforceable in this country. For the same reason, such a judgment will also be unenforceable under clause (f) of Section 13, since such a judgment would obviously be in breach of the matrimonial law in force in this country.

Clause (d) of Section 13 which makes a foreign judgment unenforceable on the ground that the proceedings in which it is obtained are opposed to natural justice, states no more than an elementary principle on which any civilised system of justice rests. However, in matters concerning the family law such as the matrimonial disputes, this principle has to b extended to mean something more than mere compliance with the technical rules of procedure. If the rule of audi alteram partem has any meaning with reference to the proceedings in a foreign court, for the purposes of the rule it should not be deemed sufficient that the respondent has been duly served with the process of the court. It is necessary to ascertain whether the respondent was in a position to present or represent himself/herself and contest effectively the said proceedings. This requirement should apply equally to the appellate proceedings if and when they are file by either party. If the foreign court has not ascertained and ensured such effective contest by requiring the petitioner to make all necessary provisions for the respondent to defend including the costs of travel, residence and litigation where necessary, it should be held that the proceedings are in breach of the principles of natural justice. It is for this reason that we find that the rules of Private International Law of some countries insist, even in commercial matters, that the action should be filed in the forum where the defendant is either domiciled or is habitually resident. It is only in special cases which is called special jurisdiction where the claim has some real link with other forum that a judgment of such forum is recognised. This jurisdiction principle is also recognised by the Judgments Convention of this European Community . If, therefore, the courts in this country also insist as a matter of rule that foreign matrimonial judgment will be recognised only it it is of the forum where the respondent is domiciled or habitually and permanently resides, the provisions of clause (d) may be held to have been satisfied. The provision of clause (e) of Section 13 which requires that the courts in this country will not recognise a foreign judgment if it has been obtained by fraud, is self-evident. However, in view of the decision of this Court in Smt. Satya v. Teja Singh, (supra) it must be understood that the fraud need not be only in relation to the merits of the mater but may also be in relation to jurisdictional facts.

Citations : [1991 SCC CRI 1 626], [1991 CRIMES SC 2 855], [1991 SCALE 2 1], [1991 SCR 2 821], [1991 SCC 3 451], [1991 DMC SC 2 366], [1991 JT SC 1 33], [1991 LW 2 646]

Other Sources :

https://indiankanoon.org/doc/989920/

https://www.casemine.com/judgement/in/5609ac6be4b014971140ed08