This paper analyzes the impact of Brexit on trademark and design laws. Both areas are deemed to be profoundly affected by the United Kingdom’s exit from the European Union, since they have been substantially Europeanized. The European Union created unitary rights in both areas of law that would cease to extend to the United Kingdom after it leaves the European Union. In addition, the national laws on trademarks and designs in EU member states have been harmonized by European legislation. The United Kingdom may diverge from this common approach post-Brexit, but this depends heavily on the specific shape that Brexit may eventually take. Finally, the paper will discuss the effects of Brexit on the laws of geographical indications, the doctrine of exhaustion and the interface of intellectual property and competition law. Since they derive from EU legislation or case law, the specific shape of Brexit will define their fate in UK law.