IP analysis: In March 2018, the second defendant, Ms Chloe Wilkinson, set up a YouTube channel under the name ‘DissociaDID’. Ms Wilkinson is affected by a condition known as dissociative identity disorder (‘DID’), which is characterised by an individual taking on two or more alternative and distinct personality types. The first defendant, Dissociadid Ltd, is a company set up by Ms Wilkinson. Ms Wilkinson uploaded videos on DID and herself on to her YouTube channel in an attempt to raise awareness and provide support to others who suffer from this condition. The channel became successful and by May 2021 it reached an excess of 1 million subscribers. By 2020, Ms Wilkson’s gross earnings were approximately £105,000. In March 2020, the claimant, Mr Sergio Mendes Costa, reached out to Ms Wilkinson to collaborate on her project. Mr Costa and Ms Wilkinson worked on nine literary works. While there is no dispute that eight of those works were works of joint authorship (‘Joint Works’), the ninth piece of work (the ‘Disclaimer’) became a point of dispute with Mr Costa claiming that he was a joint author of the Disclaimer and Ms Wilkinson alleging that Mr Costa’s contribution was too insubstantial to have made him a joint author. His Honour Judge Hacon came to the overall conclusion that Mr Costa was not a joint author of the Disclaimer. On the issue of counterclaim the judge held there was no contract between Mr Costa and Ms Wilkinson. Had the contract existed, it would not have contained the implied terms alleged by Ms Wilkinson. Notwithstanding this, the judge found that Mr Costa intended to cause harm to the defendants—harm generated by videos vanishing in large numbers from the defendants’ channel. Written by Anamitra Mukhopadhyay, solicitor at JMW Solicitors LLP.