Domain names can receive passing off protection where prior goodwill, deceptive similarity and likely confusion are established.

A domain name used in the course of business may function as a trade mark-like identifier and be protected under passing off where it has acquired goodwill. Applying the requirements of goodwill, misrepresentation and likely damage, the Court found prima facie reputation in the mark "Sify", held the rival names "Siffy" and "Siffynet" deceptively similar, and accepted that overlapping services made confusion and diversion of customers likely. The respondent's explanation for adopting the name was rejected, and the prior user's goodwill and balance of convenience favoured restraint against further use of the similar domain name.

---

---

Issues: Whether a domain name can be treated as a source-identifying mark protected under passing off principles, and whether the appellant was entitled to an injunction restraining the respondent from using a deceptively similar domain name.

Analysis: The definitions of "trade mark", "mark", "goods" and "services" in the Trade Marks Act, 1999 show that a distinctive word or name capable of identifying goods or services may function as a trade mark. A domain name, though originally an internet address, also serves as a business identifier in commercial use and may acquire the characteristics of a trade mark. A passing off action requires goodwill, misrepresentation likely to cause confusion, and resulting loss or likelihood of loss. On the material, the appellant had established prima facie goodwill and reputation in the mark "Sify", the respondent's adoption of "Siffy" and "Siffynet" was deceptively similar, and the overlap in services made confusion and diversion of customers reasonably probable. The respondent's explanation for adoption of the name was not accepted, and the balance of convenience favoured protecting the appellant's prior user rights and goodwill.

Conclusion: The appellant's domain name was entitled to protection against passing off, and the respondent's use of the similar domain name was liable to be restrained.

Final Conclusion: The judgment affirms that a domain name may acquire trade mark-like significance and be protected through passing off where prior user, goodwill, deceptive similarity and likelihood of confusion are established.

Ratio Decidendi: A domain name used in the course of business can function as a protectable identifier under passing off law if it has acquired goodwill and the impugned use is deceptively similar and likely to confuse users.

---