ASPA sent an email to the Intellectual Property Office of Singapore (IPOS) on 18 December 2025 enclosing a letter titled “Letter from ASPA to IPOS - Use of Invitations to Amend for Patent Prosecution Highway Requests Made After a Request for Examination Has Been Made”.

The letter concerned the use of Invitations to Amend for Patent Prosecution Highway requests made after a request for examination has already been made.

IPOS responded on 3 March 2026 to acknowledge ASPA’s views. IPOS also indicated that it would propose amendments to the Examination Guidelines for more clarity.

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