actions relating to the use of the invention before the grant of the patent or to the right based on the prior use of the invention; 3. Experience in patent litigation which must be proved for the appointment provided for in Article 15(1) of the Agreement may be acquired through training in accordance with Article 11(4)(a) of this Statute. (4) Persons who use patents which are the subject of a decision to be reviewed and who act in good faith should be able to continue to use those patents. 4. In a Contracting Member State, an additional local division shall be established at the request of one hundred patents per calendar year, commenced in that Contracting Member State for three consecutive years before or after the entry into force of this Agreement. The number of local authorities in a Contracting Member State may not exceed four. a European patent which has not yet been extinguished on the date of entry into force of this Agreement or which has been granted after that date, without prejudice to Article 83; and 3. Technically qualified judges must have a university degree and proven expertise in a field of technology. They must also have a proven knowledge of civil law and relevant procedures in patent litigation. Ireland had originally planned a referendum in autumn 2013 on a constitutional amendment needed to ratify the agreement, but it was later postponed to an extra-budgetary date after the 2014 European elections.
  In May 2014, Richard Bruton, the Irish minister in charge of the case, confirmed that a constitutional referendum would be held, but that the date had not been set by the government.  The Irish government announced later in its legislative programme that it planned to publish in 2015 the bill needed to « amend the Constitution » to amend Article 29 of the Constitution to recognise the Convention on a Unified Patent Court and to put it to a referendum after parliamentary approval. In May 2015, Ireland`s Minister for Children and Youth stated that his government did not foresee referendums during the rest of the legislature and that, therefore, the Irish referendum and the ratification of the UPC would be postponed until after April 2016.  3. . . .