Code of Civil Procedure, 1908 (CPC)
Res Judicata and Estoppel Distinguished
Both doctrines prevent a party from asserting something, and they are frequently confused because one of them, estoppel by record, is simply another name for res judicata. The distinction that matters is between res judicata under Section 11 of the Code of Civil Procedure, 1908, which arises from a court's decision, and estoppel under Section 115 of the Indian Evidence Act, 1872, which arises from a party's own conduct. One binds the court; the other binds the party. These notes set out each and the consequences that follow.
The two doctrines and the different sources from which each arises
1. The Two Provisions
§ Section 11, CPC 1908 (in substance) No Court shall try any suit or issue in which the matter directly and substantially in issue has been directly and substantially in issue in a former suit between the same parties, or between parties under whom they claim, litigating under the same title, in a Court competent to try such subsequent suit, and has been heard and finally decided by such Court. |
§ Section 115, Indian Evidence Act, 1872 When one person has, by his declaration, act or omission, intentionally caused or permitted another person to believe a thing to be true and to act upon such belief, neither he nor his representative shall be allowed, in any suit or proceeding between himself and such person or his representative, to deny the truth of that thing. |
The wording of each provision carries the distinction. Section 11 is addressed to the court: no Court shall try. Section 115 is addressed to the party: neither he nor his representative shall be allowed to deny. One removes the court's authority to try the matter; the other removes a party's ability to prove a fact.
2. The Differences
Basis | Res judicata, Section 11 CPC | Estoppel, Section 115 Evidence Act |
|---|---|---|
Nature | A rule of PROCEDURE, founded on public policy | A rule of EVIDENCE, founded on equity |
Whom it binds | The COURT: it shall not try the matter | The PARTY: he shall not be allowed to deny the thing |
What it arises from | A judicial DECISION, heard and finally decided | A party's own CONDUCT: a declaration, act or omission |
What it prevents | The SUIT or ISSUE from being TRIED | A PARTY from PROVING a particular fact |
Against whom | Both parties equally, and their privies | Only the party who made the representation, and his representative |
Basis of the bar | That the matter has already been decided by a competent court | That the other party believed the representation and ACTED ON IT |
Waiver | Cannot be waived by agreement, resting on public policy | May be waived, and must be pleaded and proved |
Effect on jurisdiction | It goes to the court's authority to try the matter | It does not affect jurisdiction; it affects the evidence a party may lead |
3. The Overlap: Estoppel by Record
§ Where the two meet Estoppel is classified into three kinds: estoppel by record, estoppel by deed, and estoppel by conduct or representation. Estoppel by record is res judicata itself. A party is precluded from denying what a court has decided between him and his opponent. In Indian law that field is occupied by Section 11 and by the general principle of res judicata, so the expression is more useful as a classification than as a separate doctrine. Estoppel by representation is different in kind. It rests on Section 115 of the Evidence Act and binds because of what the party did, not because of what a court decided. So the correct statement is: res judicata is a species of estoppel by record; it is not a species of estoppel by representation, and the two rest on different foundations. |
4. Two Further Comparisons
Doctrine | Source | Effect |
|---|---|---|
Res judicata, Section 11 | A decision of a competent court, heard and finally decided | The court shall not try the suit or issue |
Constructive res judicata, Explanation IV | A ground that might and ought to have been raised and was not | Deemed to have been in issue, and barred in the later suit |
Estoppel by record | The same as res judicata; the classification of estoppel in which it falls | The party is precluded by the adjudication |
Estoppel by representation, Section 115 Evidence Act | A declaration, act or omission that another believed and acted on | The party may not deny the truth of the thing represented |
Issue estoppel | A finding on a particular issue, finally decided between the parties | The parties are bound by that finding even in a later suit on a different cause of action |
Waiver | A party's abandonment of a known right | He cannot afterwards assert the right, though no court has decided anything |
§ A worked example that separates them Res judicata. A sues B for a declaration of title and loses. He sues again on the same title. The second suit is barred: a competent court has decided the matter between the same parties, and no court shall try it. Estoppel. A, knowing that he owns a plot, stands by and tells B that the plot belongs to C, and B buys it from C on that footing. In a later suit between A and B, A is not allowed to deny what he represented, whether or not any court has decided the question of title. The difference in one line. In the first, the matter has been adjudicated. In the second, it never was, and the bar comes from what A himself said and did. |
5. Landmark Points
- Section 11 binds the court: no court shall try a suit or issue already heard and finally decided between the same parties by a competent court.
- Section 115 of the Evidence Act binds the party: he shall not be allowed to deny the truth of a thing he caused another to believe and act upon.
- Res judicata is a rule of procedure founded on public policy; estoppel is a rule of evidence founded on equity.
- Res judicata operates against both parties; estoppel operates against the party who made the representation.
- Res judicata cannot be waived by agreement; estoppel may be waived, and must be pleaded and proved.
- Estoppel by record is res judicata itself, and is distinct from estoppel by representation, which rests on the Evidence Act.
6. Frequently Asked Questions
What is the main difference between res judicata and estoppel?
Res judicata binds the court, which shall not try a matter already decided; estoppel binds the party, who shall not be allowed to deny a thing he caused another to believe and act upon. One stops a matter being tried, the other stops a fact being proved.
Which is a rule of procedure and which a rule of evidence?
Res judicata under Section 11 of the Code is a rule of procedure founded on public policy. Estoppel under Section 115 of the Indian Evidence Act, 1872 is a rule of evidence founded on equity.
Does res judicata operate against both parties?
Yes. The decision binds both, and their privies. Estoppel by representation operates only against the party who made the representation, and his representative, since it rests on his own conduct.
Can either be waived?
Estoppel may be waived, and it must be pleaded and proved, including the representation and the reliance on it. Res judicata rests on public policy and cannot be waived by agreement between the parties.
Is estoppel by record the same as res judicata?
Essentially yes. Estoppel by record is the classification of estoppel in which res judicata falls: a party is precluded by an adjudication between him and his opponent. Estoppel by representation, by contrast, rests on conduct and is different in kind.
Does estoppel affect the court's jurisdiction?
No. Estoppel affects the evidence a party may lead: he may not deny the thing represented. Res judicata goes further and removes the court's authority to try the matter at all.
7. Related Topics in This CPC Series
- Doctrine of Res Judicata: Section 11
- Issue Estoppel and Cause of Action Estoppel
- Constructive Res Judicata: Explanation IV to Section 11
- Res Judicata and Res Sub Judice Distinguished