In the headquarters agreement concluded with the country in whose territory the organization has its registered office, it is provided that that country grants advances if the working capital is not sufficient. The amount of such advances and the conditions under which they are granted shall be the subject of separate agreements between that country and the Organization. This Agreement is in the process of being signed in Strasbourg until 30 September 1971. The audit shall be carried out by one or more countries of the Special Union or by external auditors in accordance with the Financial Regulation. They shall be appointed by the Assembly with their approval. The agreement – commonly known as the IPC agreement – was concluded in 1971 and amended in 1979. It is open to States parties to the Paris Convention on the Protection of Industrial Property (1883). Instruments of ratification or accession shall be deposited with the Director General of WIPO. The International Patent Classification, abbreviated IPC, was introduced by the 1971 Strasbourg Convention. It creates a hierarchical system of language-independent symbols to classify patents and utility models according to the different technical fields of which they are part. At the request of one quarter of the members of the Assembly, the Assembly shall meet in extraordinary session, convened by the Director-General.
To keep the CPI up to date, it is constantly revised and a new edition is released every year on January 1. Any amendment adopted in accordance with point (a) shall apply to all countries which become members of the special association after the date of entry into force of the amendment referred to in point (a). For the purpose of fixing its contribution in accordance with point (i) of paragraph 3, each country of the Special Association shall belong to the same class to which it belongs in the Paris Union for the Protection of Industrial Property and shall pay its annual contribution on the basis of the same number of units as that fixed for that category in that Union. The International Bureau shall incorporate into the Classification the amendments which have entered into force. . . .