Copyright infringement requires substantial copying of artistic expression; distinct presentation of a common word was held insufficient.

Copyright infringement of an artistic work requires substantial copying or colourable imitation of the protected artistic expression, such that an ordinary viewer gets the unmistakable impression of a copy. Applying that test, the HC found the marks "Sharp" and "Sharp Tools" visually and structurally distinct: the appellant's design used a semi-circular form with radiating features, while the respondent's work had a different layout. As copyright protects original expression and manner of depiction, not common words alone, no actionable copying was established and the challenge to the respondent's registration failed.

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Issues: Whether the respondent's artistic work and copyright registration in the words "Sharp Tools" infringed the appellant's copyright in the work "Sharp", and whether rectification of the respondent's registration was warranted.

Analysis: The dispute turned on whether the respondent's work was a copy, colourable imitation, adaptation, or reproduction of the appellant's work. The relevant legal test was whether the later work produced an unmistakable impression to the ordinary viewer that it was a copy of the earlier work. Copyright protection extends to the original artistic expression and the manner of depiction, not to ideas or common words as such. On comparison, the appellant's mark consisted of "Sharp" in a semi-circular design with radiating features, while the respondent's work was "Sharp Tools" in a distinct layout. The two works were visually and structurally different, and the Court found no substantial resemblance or copying.

Conclusion: The respondent's work did not infringe the appellant's copyright, and the challenge to the respondent's copyright registration failed.

Final Conclusion: The appeal was dismissed because no copyright piracy or actionable copying was established on the facts.

Ratio Decidendi: Copyright infringement of an artistic work is made out only when the impugned work substantially copies or colourably imitates the protected artistic expression so that an ordinary viewer gets the unmistakable impression of a copy; mere use of a common word in a distinct artistic presentation is insufficient.

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