PCT Calculator

PCT is Patent Cooperation Treaty, it provides unified procedure for filing patent applications in each stage. PCT time limit calculator calculates the time limits for submission of priority document, international publication and entry into the national phase. PCT Timeline assists applicants in the computing of essential PCT Time Limits. To calculate time limits of priority document, enter the earliest priority date and an ISR transmittal date (optional) in the below PCT calculator.

PCT Time Limit Calculator

Submit Priority Document
Rule 17: The Priority Document

Earliest Potential Date for International Publication
Article 21: International Publication

Time Limit for Entry into National / Regional Phase
Article 22: Copy, Translation, and Fee, to Designated Offices
if filing incompatible with PCT Article 22, deadline is
, else deadline
Time Limit for Withdrawal of International Application
Rule90bis: Withdrawals

Time Limit for Recording of Changes
Rule 92bis: Recording of Changes in Certain Indications in the Request or the Demand

Time Limit for Requesting Supplementary International Search
Rule 45bis: Supplementary International Searches

Time Limit for Filing Article 19 amendments
Article 19: Amendment of the Claims Before the International Bureau

PCT is Patent Cooperation Treaty, it provides unified procedure for filing patent applications in each stage. PCT time limit calculator calculates the time limits for submission of priority document, international publication and entry into the national phase. PCT Timeline assists applicants in the computing of essential PCT Time Limits. To calculate time limits of priority document, enter the earliest priority date and an ISR transmittal date (optional) in the below PCT calculator.

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Note :This statistics calculator is presented for your own personal use and is to be used as a guide only. Medical and other decisions should NOT be based on the results of this calculator. Although this calculator has been tested, we cannot guarantee the accuracy of its calculations or results.


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