Each contracting State undertakes to supply to any other contracting State or to the International Civil Aviation Organization, on demand, information concerning the registration and ownership of any particular aircraft registered in that State. In addition, each contracting State shall furnish reports to the International Civil Aviation Organization, under such regulations as the latter may prescribe, giving such pertinent data as can be made available concerning the ownership and control of aircraft registered in that State and habitually engaged in international air navigation. The data thus obtained by the International Civil Aviation Organization shall be made available by it on request to the other contracting States.

(a) While engaged in international air navigation, any authorized entry of aircraft of a contracting State into the territory of another contracting State or authorized transit across the territory of such State with or without landings shall not entail any seizure or detention of the aircraft or any claim against the owner or operator thereof or any other interference therewith by or on behalf of such State or any person therein, on the ground that the construction, mechanism, parts, accessories or operation of the aircraft is an infringement of any patent, design, or model duly granted or registered in the State whose territory is entered by the aircraft, it being agreed that no deposit of security in connection with the foregoing exemption from seizure or detention of the aircraft shall in any case be required in the State entered by such aircraft.

Every aircraft passing through the territory of a contracting State, including landings and stoppages reasonably necessary for the purpose of such transit, shall be exempt from any seizure on the ground of infringement of patent, design or model, subject to the deposit of security the amount of which in default of amicable agreement shall be fixed with the least possible delay by the competent authority of the place of seizure.

CHICAGO CONVENTION-Continued

(b) The provisions of paragraph (a) of
this Article shall also be applicable to the
storage of spare parts and spare equipment
for the aircraft and the right to use and
install the same in the repair of an aircraft
of a contracting State in the territory of
any other contracting State, provided that
any patented part or equipment so stored
shall not be sold or distributed internally
in or exported commercially from the con-
tracting State entered by the aircraft.

(c) The benefits of this Article shall
apply only to such States, parties to this
Convention, as either (1) are parties to the
International Convention for the Protec-
tion of Industrial Property and to any
amendments thereof; or (2) have enacted
patent laws which recognize and give ade-
quate protection to inventions made by
the nationals of the other States parties to
this Convention.