Section 11 — Res judicata
A matter once finally decided between the same parties by a competent court cannot be litigated again. Litigation must end somewhere — a thing adjudged.
How to read Section 11
A five-step journey — all five conditions must be met before a suit is barred as res judicata.
Same matter in issue
The matter directly and substantially in issue in the later suit was also directly and substantially in issue in a former suit.
Same parties
Between the same parties — or those claiming under them (their privies or representatives).
Same title
The parties litigated under the same title — that is, in the same capacity or right.
Competent court
The former court was competent to try the subsequent suit.
Heard & finally decided
The matter was heard and finally decided by that court — on the merits.
Res judicata, in one picture
A matter once finally decided between the same parties cannot be re-litigated — that is res judicata (“a thing already adjudged”). Contrast §10, which only stays a matter still pending.
The section in its own words
The rule, then the most important Explanation.
Key terms decoded
The words in the main rule, in plain language.
Literally “a matter already adjudged” — a question finally decided between the same parties cannot be re-litigated.
A matter that was central to the dispute and decided on its merits — not merely collateral or incidental.
The identical parties, or those claiming through them (their privies / representatives-in-interest).
Suing or defending in the same legal capacity or right as in the former suit.
A court competent to try the later suit. By Explanation II, ignore any right of appeal from its decisions.
The matter was actually decided on the merits, and that decision has become final.
(Explanation I) A suit decided before the present one — decided first, not necessarily filed first.
(Explanation IV) A plea that might and ought to have been raised is deemed to have been in issue and decided.
The five-condition test
All five must coexist. Miss even one — no res judicata, and the later suit may proceed.
The eight Explanations (I–VIII)
Section 11 is followed by eight Explanations. Here is each one — set out in full, and decoded in plain language.
Settles which of two suits is the “former” one — the test is which was decided first, not which was filed first.
Two suits may be pending together; the one decided earlier binds the other, even if it was instituted later.
Suit B is filed after Suit A but decided before it — B is the “former suit”, and its findings bind A.
The former court’s competence is judged on its own jurisdiction — whether or not an appeal lay from its decisions is irrelevant.
A decision is no less binding because no appeal (or only a limited appeal) lay against it.
The matter must have been actually in contest — alleged by one party and denied or admitted (expressly or impliedly) by the other.
Res judicata binds only matters genuinely litigated, not those merely mentioned in passing.
Constructive res judicata — a ground of attack or defence that a party might and ought to have raised is deemed to have been in issue and decided.
Stops a litigant from keeping pleas in reserve for a second round — the most heavily litigated Explanation.
If you could and should have pleaded a defence in the first suit but did not, you cannot raise it in a later suit on the same matter.
Relief claimed in the plaint but not expressly granted by the decree is deemed refused.
A decree’s silence on a prayer counts as rejection — you cannot file a fresh suit for that relief.
In bona fide litigation over a public right or a private right claimed in common, all interested persons are deemed to claim under the actual litigants.
Binds the whole class to the result — the res-judicata partner of representative suits (§ 91/§ 92, Order I Rule 8).
Res judicata applies to execution proceedings too — read “suit / issue / former suit” as the execution proceeding, the question in it, and an earlier execution proceeding.
A point once decided in execution cannot be re-agitated in a later execution — finality in execution (cf. § 47).
An issue finally decided by a Court of limited jurisdiction (competent to decide that issue) operates as res judicata in a later suit — even if that court could not have tried the later suit.
Overrode the older view that a small / limited court’s decision did not bind a higher-value suit; such issue-decisions now bind.
The section, dissected
Each fragment — its plain meaning and the kind of clause it is.
Prohibitory rule
Condition
Condition
Condition
Condition
Constructive res judicata
Explanation IV — the “might and ought” rule.
What you could have raised, but didn’t, is deemed decided
Any plea which might and ought to have been raised as a ground of attack or defence in the former suit is treated as if it had been in issue and decided — so you cannot save it up for a fresh suit.
Constructive res judicata
Explanation IV: a matter that might and ought to have been made a ground of defence or attack is treated as if it had been directly in issue and decided — you cannot hold it back for a later suit.
Two maxims behind it
Res judicata rests on public policy.
The core maxim, word by word
Res judicata pro veritate accipitur
“A matter adjudged is accepted as true.”
Why it fits §11: once a competent court has finally decided a matter, the law treats that decision as the truth between the parties — it cannot be reopened.