In order to examine the Patent Cooperation Treaty (PCT) it is necessary that we should have a clear understanding what about PCT is and the purpose of PCT. The Washington Diplomatic Conference on the Patent Cooperation Treaty took place from May 25 to June 19, 1970. The Patent Cooperation Treaty was signed in Washington at the very end of the conference, i.e., on June 19, 1970. The Treaty entered into force on January 21, 1978 initially with 18 Contracting States. The first international applications were filed on June 1, 1978. The Treaty was subsequently amended in 1979, and modified in 1984 and 2001.
PCT is an international patent law treaty. It provides a unified procedure for filing patent applications to protect inventions in each of its Contracting States. A patent application filed under the PCT is called an international application or PCT application. An international patent application (PCT Application) has two phases: The first phase is the international phase in which patent protection is pending under a single patent application filed with the patent office of a contracting state of the PCT. The second phase is the national and regional phase which follows the international phase in which rights are continued by filing necessary documents with the patent offices of separate contracting states of the PCT. A PCT application, as such, is not an actual request that a patent be granted, and it is not converted into one unless and until it enters the “national phase”. The international application needs to be filed in one language only. At least one applicant (either a physical or legal person) must be a national or resident of a Contracting State to the PCT, otherwise no international filing date is accorded. In most member states, the applicant or at least one of the applicants of the application is required to be a national or resident of the state of the receiving office where the application is filed. Applicants from any contracting state may file an international patent application at the International Bureau in Geneva[1].
Upon filing the international application, all Contracting States are automatically designated. An international patent application has the same standing during the international phase as if a national or regional patent application had been filed in every contracting state of the PCT.
Eighteen months after the filing date or the priority date if any, the international application is published by the International Bureau (IB) of World Intellectual Property Organization, based at Geneva, Switzerland in one of the eight languages of publication i.e. Arabic, Chinese, English, French, German, Japanese, Russian and Spanish[2].
[1] Under Rule 19(1)(iii) of PCT Regulations a PCT application can be filed at the International Bureau in Geneva irrespective of the Contracting State of which the applicant is a resident or national.
[2] Rule 48(3) of the PCT Regulations provides for the Languages in which the publications can be made.