Patent and Latent Ambiguity under Sections 96 to 101 of the Bharatiya Sakshya Adhiniyam, 2023

A document may be perfectly clear and still not tell a court what it means. Six sections deal with the problem, and they turn on a distinction drawn four centuries ago: whether the defect appears on the face of the writing, or only when the writing is laid against the facts. The first kind of defect the court cannot cure, because curing it would mean writing an agreement the parties never made. The second it cures readily, because the document is complete and the evidence only identifies what it refers to.

1. The Distinction

The classification descends from Bacon's maxims, where the two kinds of ambiguity were called ambiguitas patens and ambiguitas latens — the open and the hidden.

The working test is a simple one. Hand the document to a reader who knows nothing of the surrounding facts. If he can see that something is wrong — a blank, a contradiction, an alternative never resolved — the ambiguity is patent. If it reads without difficulty and the trouble emerges only when the facts are supplied, it is latent.

2. Section 96 — Patent Ambiguity

The rule is absolute in its own field, and the reason is worth stating because it explains why no proviso softens it.

Where a document is ambiguous on its face, there is nothing to construe. A court admitting evidence of what the parties intended would not be interpreting an agreement but making one — supplying a term the parties never recorded and perhaps never settled. The two illustrations make the point precisely: a price stated as an unresolved alternative is no price at all, and a blank is not a term.

3. Section 97 — Plain Language Fitting the Facts

Section 97 is the counterpart of Section 96 at the opposite end. Where the words are clear and the facts answer them exactly, there is no ambiguity of any kind, and there is nothing for evidence to resolve.

A party who says in these circumstances that the document means something other than what it plainly says is not explaining it — he is contradicting it, and Section 95 would exclude him in any event. Section 97 makes the exclusion explicit on the construction side.

The three sections therefore form a sequence. Section 96 — the words are defective and cannot be cured. Section 97 — the words are clear and fit, and need no cure. Sections 98 to 101 — the words are clear but the facts do not answer them cleanly, and evidence is admitted.

4. Section 98 — Language Unmeaning in Reference to Existing Facts

This is the first of the latent-ambiguity provisions and the clearest illustration of why they exist. The words 'my house in Kolkata' are perfectly plain. The difficulty appears only when one looks for the house — and there is none.

The document is not defective; the description simply does not answer any fact. Evidence is therefore admitted to show that the words were used in a peculiar sense, and the evidence in the illustration is decisive: B has been in possession of the Howrah house since execution, which shows what both parties understood the deed to mean.

The illustration is worth noticing for the kind of evidence it admits. It is not evidence of what the parties said they meant; it is evidence of what they did — conduct under the document, which identifies its subject far more reliably than recollection.

5. Section 99 — Language Applying to One of Several Persons or Things

Here the description is apt but is too apt — it fits more than one candidate, and the document does not say which. The language could have been meant to apply to any one of them and could not have been meant to apply to more than one.

This is the paradigm latent ambiguity, and the reason evidence is admitted is that the court is not supplying a term. The parties settled the term; they agreed on a white horse, and there is a white horse they meant. The evidence identifies which, and the agreement is enforced as made.

The evidence available is the ordinary material of circumstance: which horse was shown to the buyer, which was in the seller's possession at the time, what the price corresponded to, what was delivered, what the parties did afterwards.

6. Section 100 — Language Applying Partly to Two Sets of Facts

This is the subtlest of the four and the most common in practice. The description contains two elements, each of which identifies a different thing, and no single thing answers both.

Property descriptions in Indian conveyancing frequently produce exactly this problem. A deed identifies land by survey number and by boundaries, and the two do not agree; or by area and by occupation, and each points elsewhere. Section 100 admits evidence to determine which element the parties were relying upon.

Rules of construction assist here and sit alongside the section. Where a description contains a false or additional particular which does not fit, the maxim falsa demonstratio non nocet permits the false particular to be rejected if what remains identifies the subject with sufficient certainty. The evidence admitted under Section 100 is what allows a court to decide which particular is the false one.

7. Section 101 — Illegible Characters and Special Expressions

Section 101 is the most used of the six in commercial practice and is the route by which trade vocabulary, local terminology and technical language are explained.

The categories it covers are wide: characters that cannot be read or are not commonly intelligible; expressions that are foreign, obsolete, technical, local or provincial; abbreviations; and words used in a peculiar sense.

Three provisions elsewhere in the Adhiniyam supply the evidence.

• Section 43 makes relevant the opinion of persons having special means of knowledge as to the meaning of words or terms used in particular districts or by particular classes of people, and as to the usages and tenets of any body of men.
• Section 39(1) makes relevant the opinion of persons specially skilled in any field, the residuary words accommodating technical vocabulary of every kind.
• Section 11 makes relevant the transactions and particular instances by which a usage was exercised or recognised, which is how a trade meaning is established as a matter of practice rather than of opinion.

8. The Six Sections Together

A pattern runs through the six. Evidence is admitted wherever it identifies what a complete document refers to, and excluded wherever it would supply what an incomplete document omits. The line is between construing an agreement and making one, and every one of the six sections falls on one side or the other of it.

9. The Relationship with Section 95

The ambiguity provisions and the exclusionary rule occupy adjoining ground, and the boundary is worth marking.

Proviso 6 to Section 95 admits any fact showing in what manner the language of a document is related to existing facts. That proviso and Sections 98 to 101 are doing the same work from different directions, and evidence admitted under the ambiguity sections would in most cases also fall within proviso 6.

The distinction that matters is between construction and variation.

• Evidence that 'my white horse' referred to a particular horse is construction. The term is unchanged; the evidence identifies its subject.
• Evidence that the parties really agreed on a different horse from the one the words describe is variation, and Section 95 excludes it.

A party framing an application should be clear which he is attempting, because the two attract entirely different answers. If the case is genuinely one of identification, the ambiguity sections and proviso 6 admit the evidence and no leave is required. If the case is that the document records the wrong bargain, the route is a proviso going to invalidity — mistake under proviso 1 — or a claim for rectification outside the Adhiniyam altogether.

10. Practical Points

1. Classify the ambiguity before arguing about it. Whether it is patent or latent decides whether evidence is admissible at all, and it should be the first submission rather than an afterthought.
2. Apply the ignorant-reader test. Could somebody who knew nothing of the facts see that something was wrong? If yes, the ambiguity is patent.
3. Where the ambiguity is patent, look outside Section 96. Rectification, mistake under proviso 1 to Section 95, or a case that the document was never intended to operate.
4. Lead evidence of conduct, not of intention. The illustration to Section 98 admits evidence that the buyer had been in possession — conduct under the document identifies its subject far more convincingly than recollection of what was meant.
5. For property descriptions, Section 100 is usually the provision, since survey numbers, boundaries, areas and occupation so often point in different directions.
6. For trade and technical language, use Section 101 with Sections 43 and 39(1), and establish the usage by instances under Section 11.
7. Do not use Section 101 to supply a missing term. It explains words that are there; it does not add words that are not.

11. The Position Stated Shortly

1. The distinction is between a defect on the face of the document and one appearing only on application to the facts.
2. Section 96 excludes evidence of a patent ambiguity, because supplying the defect would be making an agreement rather than construing one.
3. A patent ambiguity in an essential term means the term fails for uncertainty, not that the court picks a reading.
4. Section 97 excludes evidence where the language is plain and fits the facts exactly, there being nothing to resolve.
5. Section 98 admits evidence where the language is plain but unmeaning in reference to the facts.
6. Section 99 admits evidence where the description fits several candidates, and Section 100 where it fits two sets of facts partly and neither wholly.
7. Section 101 admits evidence of the meaning of illegible, foreign, obsolete, technical, local and provincial expressions, abbreviations and words used in a peculiar sense.
8. The line throughout is between identifying what a complete document refers to and supplying what an incomplete one omits.

12. Related Topics and Provisions