Patents: Battlekart Europe SA v Chaos Karts 1 Ltd

Jane Lambert Intellectual Property Enterprise Court (HH Judge Hacon) Battlekart Europe SA v Chaos Karts 1 Ltd and others [2025] EWHC 1936 (IPEC) (25 July 2025) This was an action by Battlekart Europe SA ("Battlekart") against Little Lion Entertainment Ltd ("Little Lion"), its subsidiaries, Chaos Karts Limited and The Ents Inc Limited and their director, Thomas Maguire for the infringement of European patent (UK) 3 304 522 B8 and a counterclaim by the defendants for revocation of the patent on grounds of obviousness , implausibility and added matter. The action and counterclaim were tried by HH Judge Hacon between 17 and 19 June 2025. By para [136] o f his judgment in Battlekart Europe SA v Chaos Karts 1 Ltd and others [2025] EWHC 1936 (IPEC), which he handed down on 25 July 2025, the learned judge held that the patent was invalid for lack of an inventive step and added matter. The Patent EP3304522 B8 had been granted for a system for creating an imm...