What are Article 19 amendments in PCT applications?
Article 19 amendments are amendments to the claims of a PCT application that can be made after the international search report has been established. According to the MPEP, “Article 19 amendments are exclusively amendments to the claims and these amendments can only be made after the international search report has been established.” These amendments are filed with the International Bureau.
The MPEP further states that “The International Bureau marks, in the upper right-hand corner of each replacement sheet submitted under PCT Article 19, the international application number, the date on which that sheet was received under PCT Article 19 and, in the middle of the bottom margin, the words “AMENDED SHEET (ARTICLE 19).”“
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