What is the time limit for requesting rectification of an obvious mistake in a PCT application?
The time limit for requesting rectification of an obvious mistake in a PCT application is 26 months from the priority date. This is clearly stated in MPEP 1836, which cites PCT Rule 91.2:
“A request for rectification under Rule 91.1 shall be submitted to the competent authority within 26 months from the priority date.”
It’s important to note that this time limit applies regardless of which competent authority is responsible for authorizing the rectification. The request must specify the mistake to be rectified and the proposed rectification, and may optionally include a brief explanation.
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