Category Archives: Kind codes

Retrospective Kind Codes in Espacenet

Posted on April 1, 2010 by mjwhitekingston

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

Posted on December 30, 2008 by mjwhitekingston

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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