On 17 September 2011 the EU Accession Treaty text was handed over to Croatian Prime Minister in Zagreb, after having received the final endorsement of the EU Member States subsequent to almost two years of drafting. It is expected that the Treaty will be signed in December 2011 and Croatia is foreseen to become an EU member on 1 July 2013 after the Treaty is ratified by all the Member States and Croatia itself
The accession of Croatia to the EU will have, as in former enlargements of the EU, a direct impact on the protection of Community trade marks and Community designs since the effects of the existing registrations and applications will be extended to this new Member State automatically.
More info: http://ec.europa.eu/enlargement/candidate-countries/croatia/relation/index_en.htm