The Saudi Trademark Office in Riyadh, has adopted the New GCC Trademark Law, (referred to as the NTL), and its implementing regulations with effect from 29 September 2016 replacing the old Saudi Trademark Law (referred to as the OTL). The NTL has consecrated chapter three for the process and conditions relative to the cancellation of illegal trademarks’ registration. This study analyses the cancellation of such trademarks that constitutes a pillar in the protection and enforcement of the trademarks in the Kingdom of Saudi Arabia in the era of the vision 2030 aiming to empower the kingdom’s international trade, which is indubitably linked to the aforementioned protection and enforcement. This cancellation process is well reflected in the newest decisions rendered by the Administrative Court in the Kingdom of Saudi Arabia, competent for trademarks cancellation’s cases, the Board of Grievances, (referred to as BOG). We shall study the protection as recognized by the NTL through the rendered decisions. The protection of the trademark in the Kingdom of Saudi Arabia has many challenges relevant to the judicial enforcement, this is why we shall analyze and compare via comparative and mixed methods of research how this protection is recognized and applicable in the Saudi Courts linking this legislative and judicial protection with other international approaches.