Patent Cooperation Treaty
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The Patent Cooperation Treaty 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... Wikipedia
Expiration date: 20 years
Condition: ratification by eight States, four of which have significant patenting activity
Effective: 24 January 1978
Languages: English; French;
Location: Washington, United States
Parties: 157
Signed: 19 June 1970