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Madras High Court· 28 July 2026

Does Section 29(4) of the Trade Marks Act protect a reputed registered trademark against use on dissimilar goods?

N.Ranga Rao & Sons Private Ltd v. Sree Annapoorna Agro Foods
C.S.No.259 of 2017 · O.S.A.(CAD)No.3 of 2022
Coram: Justice P.Velmurugan · Justice K.Govindarajan Thilakavadi
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Answer

Yes. Section 29(4) extends protection to a registered trademark having a reputation in India even in relation to dissimilar goods or services. The registered proprietor must establish that the trademark has acquired reputation in India, that the impugned use is without due cause, and that such use takes unfair advantage of, or is detrimental to, the distinctive character or reputation of the registered trademark. The object of the provision is to preserve the distinctiveness and goodwill of a reputed trademark and to prevent any person from unfairly exploiting or diluting its reputation. That the rival goods are neither allied nor cognate is therefore not, by itself, an answer to a claim under the provision.

Headnote

Trade Marks Act, 1999 — s.29(4) — Infringement of a registered trademark having a reputation in India — Dissimilar goods — Use without due cause — Unfair advantage and dilution — Dictionary word acquiring secondary meaning — Burden on the later adopter — Prior use — Passing off — Rendition of accounts — Trade Marks Act, 1999 — s.29(4) — reputation in India — dissimilar goods — Held: A registered trademark with a reputation in India is protected under Section 29(4) even against dissimilar goods, where the use is without due cause. That the goods are neither allied nor cognate is no answer to such a claim. (¶23, 31) Trade Marks Act, 1999 — s.29(4) — dictionary word — secondary meaning — Held further: An ordinary dictionary word cannot ordinarily be monopolised, but long, continuous and extensive commercial use may give it a secondary meaning. It is then exclusively associated in the minds of the purchasing public with one proprietor and is protectable. (¶25, 26) Trade Marks Act, 1999 — s.29(4) — due cause — burden on the later adopter — Held further: Once reputation is established, the burden lies on the later adopter to show adoption was honest, bona fide, independent and with due cause. A bare claim that the identical mark was chosen arbitrarily does not discharge it. (¶29, 33) Trade Marks Act, 1999 — s.29(4) — proof of actual confusion not required — relief — Held further: Section 29(4) requires no proof of actual confusion or actual damage; likelihood of unfair advantage or detriment suffices. The appeal was partly allowed with a permanent injunction, passing off and rendition of accounts being rejected for want of evidence. (¶36, 39)

In the Court's own words
Paragraph 23The learned Single Judge also held that edible oils and incense sticks are different products and are not allied or cognate goods. However, even if the goods are treated as different, that factor alone cannot determine the present dispute. Section 29(4) of the Trade Marks Act provides protection to a registered trademark even in respect of dissimilar goods or services, subject to the requirements contained therein. At this juncture, it is relevant to extract Section 29(4) of the Trade Marks Act:- “29(4) A registered trade mark is infringed by a person who, not being a registered proprietor or a person using by way of permitted use, uses in the course of trade, a mark which- (a) is identical with or similar to the registered trade mark; and (b) is used in relation to goods or services which are not similar to those for which the trade mark is registered; and (c) the registered trade mark has a reputation in India and the use of the mark without due cause takes unfair advantage of or is detrimental to, the distinctive character or repute of the registered trade mark.”
Paragraph 31Section 29(4) of the Trade Marks Act extends protection to a registered trademark having a reputation in India even in relation to dissimilar goods or services. To attract the said provision, the registered proprietor must establish that the trademark has acquired reputation in India, that the impugned use is without due cause, and that such use takes unfair advantage of, or is detrimental to, the distinctive character or reputation of the registered trademark. The object of the provision is to preserve the distinctiveness and goodwill of a reputed trademark and to prevent any person from unfairly exploiting or diluting its reputation.
Acts & Sections
s.29(4) Trade Marks Act, 1999

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Also decided in this judgment
Can an ordinary dictionary word acquire a secondary meaning and be exclusively associated with one proprietor?Who must prove due cause where an identical mark of established reputation is adopted later?Does Section 29(4) require proof of actual confusion or actual damage?
Plain-language answer prepared by the LexStreak Editorial Desk — verify against the judgment. Source: Madras High Court. Corrections