Judgment of the General Court (Second Chamber) of 24 March 2021.#Lego A/S v European Union Intellectual Property Office.#Community design – Invalidity proceedings – Registered community design representing a building block from a toy building set – Ground for invalidity – Non-compliance with requirements for protection – Article 25(1)(b) of Regulation (EC) No 6/2002 – Features of appearance of a product solely dictated by its technical function – Features of appearance of a product to be necessarily reproduced in their exact form and dimensions in order to permit the interconnection with other products – Designs whose purpose is to allow multiple assembly or connection of mutually interchangeable products within a modular system – Article 8(1) to (3) of Regulation No 6/2002.#Case T-515/19.