Infosys Technologies Ltd v Jupiter Infosys Ltd

• Infosys Technologies Ltd was incorporated in 1981 and became one of India's most recognized IT companies globally
• It held trademark registrations for "Infosys" in multiple classes
• Jupiter Infosys Ltd, a smaller IT company, adopted and used "Jupiter Infosys" in relation to IT services
• Infosys filed suit for trademark infringement and passing off in the Karnataka High Court
• The trial court and High Court granted relief to Infosys; Jupiter appealed

1. Whether "Jupiter Infosys" is deceptively similar to "Infosys" for identical services
2. Whether the addition of a prefix ("Jupiter") is sufficient to distinguish from a well-known mark
3. Whether the defendant's claim of independent adoption defeats infringement

• "Infosys" is the dominant and distinctive part of both marks; "Jupiter" is merely a prefix that does not dispel confusion
• In the same trade (IT services), consumers are likely to associate "Jupiter Infosys" with the plaintiff
• Independent adoption is no defence where the mark adopted is identical to a well-known registered mark in the same field
• Permanent injunction granted; defendant restrained from using "Infosys" in any form in relation to IT services

When the core distinctive element of a mark has acquired secondary meaning identifying a single source, any use of that element by a competitor in the same field is prima facie infringing. The addition of a house mark (prefix/suffix) does not cure the deceptive similarity if the dominant element remains recognizable. In the IT services market where "Infosys" is a household name, confusion is inevitable.