a variety no longer remains in existencemeans a variety of which material no longer exists;
closely related speciesmeans the species listed in the Annex;
official register of varietiesmeans the Common catalogue of Varieties of Agricultural Plant Species, referred to in Article 17 of Directive 2002/53/EC or in Article 17 of Directive 2002/55/EC, or the OECD Variety List, or a plant variety register of a Member of UPOV’;
the denomination has acquired no special significancemeans a situation where the denomination of a variety which has been entered in an official register of varieties is considered to have lost special significance on the expiry of a 10-year period after deletion from that register, unless there are exceptional circumstances.