(1)

(a) The countries of the Union agree to refuse or to invalidate the registration, and to prohibit by appropriate measures the use, without authorization by the competent authorities, either as trademarks or as elements of trademarks, of armorial bearings, flags, and other State emblems, of the countries of the Union, official signs and hallmarks indicating control and warranty adopted by them, and any imitation from a heraldic point of view.

(b) The provisions of subparagraph (a), above, shall apply equally to armorial bearings, flags, other emblems, abbreviations, and names, of international intergovernmental organizations of which one or more countries of the Union are members, with the exception of armorial bearings, flags, other emblems, abbreviations, and names, that are already the subject of international agreements in force, intended to ensure their protection.

(c) No country of the Union shall be required to apply the provisions of subparagraph (b), above, to the prejudice of the owners of rights acquired in good faith before the entry into force, in that country, of this Convention. The countries of the Union shall not be required to apply the said provisions when the use or registration referred to in subparagraph (a), above, is not of such a nature as to suggest to the public that a connection exists between the organization concerned and the armorial bearings, flags, emblems, abbreviations, and names, or if such use or registration is probably not of such a nature as to mislead the public as to the existence of a connection between the user and the organization.

(2) Prohibition of the use of official signs and hallmarks indicating control and warranty shall apply solely in cases where the marks in which they are incorporated are intended to be used on goods of the same or a similar kind.

(3)

(a) For the application of these provisions, the countries of the Union agree to communicate reciprocally, through the intermediary of the International Bureau, the list of State emblems, and official signs and hallmarks indicating control and warranty, which they desire, or may hereafter desire, to place wholly or within certain limits under the protection of this Article, and all subsequent modifications of such list. Each country of the Union shall in due course make available to the public the lists so communicated. Nevertheless such communication is not obligatory in respect of flags of States.

(b) The provisions of subparagraph (b) of paragraph (1) of this Article shall apply only to such armorial bearings, flags, other emblems, abbreviations, and names, of international intergovernmental organizations as the latter have communicated to the countries of the Union through the intermediary of the International Bureau.

(4) Any country of the Union may, within a period of twelve months from the receipt of the notification, transmit its objections, if any, through the intermediary of the International Bureau, to the country or international intergovernmental organization concerned.

(5) In the case of State flags, the measures prescribed by paragraph (1), above, shall apply solely to marks registered after November 6, 1925.

(6) In the case of State emblems other than flags, and of official signs and hallmarks of the countries of the Union, and in the case of armorial bearings, flags, other emblems, abbreviations, and names, of international intergovernmental organizations, these provisions shall apply only to marks registered more than two months after receipt of the communication provided for in paragraph (3), above.

(7) In cases of bad faith, the countries shall have the right to cancel even those marks incorporating State emblems, signs, and hallmarks, which were registered before November 6, 1925.

(8) Nationals of any country who are authorized to make use of the State emblems, signs, and hallmarks, of their country may use them even if they are similar to those of another country.

(9) The countries of the Union undertake to prohibit the unauthorized use in trade of the State armorial bearings of the other countries of the Union, when the use is of such a nature as to be misleading as to the origin of the goods.

(10) The above provisions shall not prevent the countries from exercising the right given in paragraph (3) of Article 6quinquies, Section B, to refuse or to invalidate the registration of marks incorporating, without authorization, armorial bearings, flags, other State emblems, or official signs and hallmarks adopted by a country of the Union, as well as the distinctive signs of international intergovernmental organizations referred to in paragraph (1), above”.