This Agreement shall enter into force on 1 January 2014 or on the first day of the fourth month after the deposit of the thirteenth instrument of ratification or accession in accordance with Article 84, including the three Member States in which the highest number of European patents had effect in the year preceding the year in which the signature of the Agreement takes place or on the first day of the fourth month after the date of entry into force of the amendments to Regulation (EU) No 1215/2012 concerning its relationship with this Agreement, whichever is the latest.

Any ratification or accession after the entry into force of this Agreement shall take effect on the first day of the fourth month after the deposit of the instrument of ratification or accession.