Medicinal and agrochemical products can be granted a Supplementary Protection Certificate, an intellectual property right associated with patents, to provide up to five years of additional rights and protections once their patents have expired. In order to apply for an SPC, a product must receive approval to be sold on the UK market. Under the Northern Ireland/Ireland Protocol, products to be sold in Northern Ireland must obtain approval under EU law, whilst products to be sold in the rest of the UK will obtain approval under UK law. Currently, this marketing authorisation is only given on a UK-wide basis. This regulation amends the market authorisation process to enable authorisations to be granted for the Northern Ireland market only and for the Great Britain market only.