Category Archives: Kind codes

Retrospective Kind Codes in Espacenet

The other day a colleague asked me why an “A” appeared at the end of older US patent numbers in espacenet records. I immediately answered that it’s a document kind code: “A” is used for the first publication, “B” for … Continue reading

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New Kind Codes for Republished PCT Documents

WIPO is introducing three new kind codes for republished international applications that will be implemented on Jan. 1, 2009. The codes are: A4 = Later publication of amended claims and/or statement (PCT Article 19) with revised front page A8 = … Continue reading

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