A PCT patent application is a single international filing that preserves your right to seek patent protection in up to 158 countries, without immediately committing to the cost of filing in each one. The Patent Cooperation Treaty does not itself grant any patent.

The Patent Cooperation Treaty (PCT) is an international patent law treaty, concluded in 1970. 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. A single filing of a PCT application is made with a Receiving Office (RO) in one ...

Patent Cooperation Treaty (PCT) The Patent Cooperation Treaty (PCT) makes it possible to seek patent protection for an invention simultaneously in each of a large number of countries by filing an "international" patent application. Such an application may be filed by anyone who is a national or resident of a PCT Contracting State.

The Patent Cooperation Treaty is the international patent system managed by WIPO. Find out how to seek patent protection internationally with the PCT System.

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