Difference between Patent Ambiguity and Latent Ambiguity
Dr. Tanmoy Mukherjee
Advocate
Difference between Patent Ambiguity and Latent Ambiguity-
Tanmoy Mukherjee
Advocate

|
Basis
|
Patent Ambiguity
|
Latent Ambiguity
|
|
1. Definition
|
An ambiguity that is obvious on the face of the document. The language itself is unclear, contradictory or incomplete just by reading it.
|
An ambiguity that is not obvious from the document alone but becomes apparent only when applying the words to external facts.
|
|
2.Types
|
Patent Ambiguity → Ambiguous wording. → Contradictory statement on the face. → Incomplete or missing words.
|
Latent Ambiguity → Equivocation (Sec. 99 BSA) → Ambiguity by application → Misdescription (Sec. 98 BSA)
|
|
3.Courts treat
|
No extrinsic evidence is allowed.
|
Allow extrinsic evidence.
|
|
4. Where
|
Appears on the face of the document itself.
|
Appears only when external facts are introduced.
|
|
5.Clarity of language
|
The wording is uncertain, contradictory or incomplete.
|
The wording is clear but application of wording is unclear.
|
|
6. Nature of Defect
|
Internal defect in drafting.
|
External defect caused by real-world circumstances.
|
|
7. Role of Interpretation
|
Court resolves using- -Context within the document. - Legal presumptions. - Grammar and syntex rules. - EJUSDEM GENERIS -Noscitur a Sociis.
|
Court may go outside- - Relationships of parties. - Circumstances of making document. - Usage of trade.
|
|
8.Judicial attitude |
Courts are strict. |
Courts are flexible. |
|
9.Effect |
May render the clause void for uncertainty. |
Clause usually remains valid, ambiguity is clarified with evidence. |
|
10.Risk of Manipulation |
Low risk, because ambiguity is visible. |
Higher risk, thus courts secure reliable, corroborated evidence. |
|
11.Arising |
Arises during drafting. |
Arises during execution or application. |
|
12.Role of context |
Context within the four corners is used. |
Broader context (surrounding facts is used). |
|
13.Courts classify |
Ambiguity is apparent→ facial ambiguity |
Ambiguity is hidden→ extrinsic ambiguity. |
|
14. Illustration |
Section-96- A agrees, in writing, to sell a horse to B for "one lakh rupees or one lakh fifty thousand rupees". Evidence cannot be given to show which price was to be given. |
Section- 98 A sells to B, by deed, "my house in Kolkata". A had no house in Kolkata, but it appears that, he had a house at Howrah, of which B had been in possession since the execution of the deed. This fact may be proved to show that the deed related to the house at Howrah. Section- 99 A agrees to sell B, for one thousand rupees, "my white horse". A has two white horses. Evidence may be given of facts which show which of them was meant. |