PCT basics The Pacific Crest Trail is a wilderness path in our backyard. Within a short driving distance of millions, the PCT is easily accessible and passes through magnificently untamed country. It avoids roads and towns while staying remote and in nature. On overnight trips, travelers camp along the way and carry their own supplies.

The Patent Cooperation Treaty (PCT) enables the U.S. applicant to file one application, "an international application," in a standardized format in English in the U.S. Receiving Office (the U.S. Patent and Trademark Office), and have that application acknowledged as a regular national or regional filing in any State or region that is party to ...

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 ...

Free search of international patent applications filed under the PCT System and in many national collections.

The Patent Cooperation Treaty (PCT) is an international agreement among IP offices and intergovernmental authorities regarding the process of international patent applications. Contact the PCT Helpdesk for assistance.

Note that even though the filing of a request constitutes under PCT Rule 4.9(a) the designation of all Contracting States bound by the PCT on the international filing date, for the grant of every kind of protection available and, where applicable, for the grant of both regional and national patents, applicants should always use the latest ...