World Intellectual Property Organization

Patent Cooperation Treaty (PCT)

CHAPTER I
INTERNATIONAL APPLICATION AND INTERNATIONAL SEARCH

Article 3
The International Application 

(1)  Applications for the protection of inventions in any of the Contracting States may be filed as international applications under this Treaty.

(2)  An international application shall contain, as specified in this Treaty and the Regulations, a request, a description, one or more claims, one or more drawings (where required), and an abstract.

(3)  The abstract merely serves the purpose of technical information and cannot be taken into account for any other purpose, particularly not for the purpose of interpreting the scope of the protection sought.

(4)  The international application shall:

(i)  be in a prescribed language;

(ii)  comply with the prescribed physical requirements;

(iii)  comply with the prescribed requirement of unity of invention;

(iv)  be subject to the payment of the prescribed fees.

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