In practice, the UPC Agreement setting up the UPC is to enter into force the first day of the fourth month after the deposit of the thirteenth instrument of ratification or accession, including France, Germany and the UK.
As a further unforeseen development of the setting up of the UPC, the United Kingdom voted “Brexit”. This Brexit has become more tangible as the UK has notified withdrawal from the EU under article 50(2) of the Treaty on European Union on March 29, 2017.
Despite the great uncertainties created by Brexit, rumors say that the UK is willing to ratify the UPC Agreement in spring 2017. Besides, Germany is apparently prepared to do so in summer 2017. This would trigger start of the UPC at the end of year 2017 or the beginning of year 2018.
Before start of the UPC, these ratifications would trigger immediate entry into force of the Protocol to the UPC Agreement signed by the Contracting Member States on October 1st, 2015.
The UPC has to be fully operable at the date the UPC Agreement enters into force.