Any country that does not consider any immediate or delayed novelty and in which the patenting procedure or other forms of protection does not provide for research in the state of the art may declare that it does not undertake to include symbols for classification groups and subgroups in the documents and opinions covered in paragraph 3. If these conditions apply only to certain types of protection or certain technological sectors, the country concerned can only assert this reservation to the extent that the conditions apply. When a country entrusts patents to the Special Union to an intergovernmental authority, it takes all possible measures to ensure that that authority uses the classification referred to in this article. Korea has joined various international efforts to improve the protection of intellectual property rights by becoming a member of the following treaties; The corresponding CPI symbols are shown on patent documents (published patent applications and patents granted), of which more than 2 million are issued each year. The corresponding symbols are awarded by the National or Regional Industrial Property Office, which publishes the patent document. For PCT applications, IPC symbols are awarded by the International Research Agency. The countries covered by this agreement form a special union and establish a common classification for invention patents, certificates of invention, utility models and utility models known as „international patent classification” (hereafter referred to as „classification”). The siege agreement with the country in which the organization has its statutory headquarters provides that, if working capital is not sufficient, that country grants advances. The amount of these advances and the conditions under which they are granted are the subject of separate agreements between that country and the organization. The audit is carried out by one or more special Union countries or by external auditors, in accordance with financial regulations. They are appointed by the Assembly with their approval. Any decision considered by one-fifth of the countries represented and having the right to vote as the basic structure of the classification or with substantial reclassification is subject to a majority of three quarters of the countries represented and voting.