The World Intellectual Property Organization (WIPO) is not scheduled to be open to the public on 25th – 26th December, 2013 and 1st – 2nd January, 2014.
The European Patent Office (EPO) and the Office for the Harmonization of the Internal Market (OHIM) are closed from 24th December 2013 to 1st January 2014, with the EPO also closed 23rd December.
EPO and OHIM Deadlines during this period are extended to 2nd January 2013.
Sources:
WIPO, Information Notice NO. 33/2013
http://www.epo.org/about-us/office/holidays.html
http://www.epo.org/law-practice/legal-texts/official-journal/president-notices/archive/20131111.html