These Regulations are made in exercise of the powers in section 8(1) of the European Union (Withdrawal) Act 2018 (c.18) in order to address failures of retained EU law to operate effectively and other deficiencies arising from the withdrawal of the United Kingdom from the European Union in relation to patents and connected areas including supplementary protection certificates.
Link: The Patents (Amendment) (EU Exit) Regulations 2019
Source: Legislation .gov.uk
