IP analysis: The court held that the claimant’s earlier registered right in a three-dimensional mark was invalid because the evidence presented was insufficient to conclude the mark had acquired distinctiveness through use by the relevant date. Additionally, the court found that four out of six features, listed as essential characteristics of the shape of the device, performed a technical function. Accordingly, the mark was found to consist exclusively of the shape of goods, which is necessary to obtain a technical result. Lastly, the judge assessed whether, if the mark was not held to be invalid, there would have been trade mark infringement, and concluded that there would be no infringement based on either a likelihood of confusion or on the reputation in the claimant's mark, since it was unclear from the evidence how and why the economic behaviours of the relevant consumers might change as a result of the use of the mark by the defendant. Written by Milena Velikova, trade mark attorney at Lee & Thomspon LLP.