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PCT Time Limit Calculator

The PCT Time Limit Calculator assists applicants in the computing of essential PCT Time Limits.

Disclaimer The PCT Time Limit Calculator is designed to assist applicants in computing PCT time limits. All dates calculated are indicative only and do not replace time limits communicated by Offices and Authorities. Correct use of the calculator requires a good knowledge of the PCT procedure and does not replace professional advice from patent attorneys or patent agents. The International Bureau of WIPO has made every effort to ensure, but cannot and does not guarantee, and makes no warranties as to, the accuracy and accessibility of the time limits calculated. WIPO assumes no liability or responsibility for any errors or omissions and further disclaims any liability of any nature for any loss howsoever caused in connection with using the PCT Time Limits Calculator.
To calculate the main time limits, please enter the earliest priority date, the international filing date and if known, the ISR Transmittal date (if omitted, a delay of 04 months after IFD is assumed for the timeline calculations (Article 19))

Main Time Limits

Correct / Add Priority

Amended Claims

Demand

Suppl. Int. Search

Withdrawal

Record Changes

Other

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