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Basic definitions

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A document

European patent application, published 18 months after filing with the EPO or 18 months after priority date

  • A1 document

    European patent application published with European search report
  • A2 document

    European patent application published without European search report (search report not available at the publication date)
  • A3 document

    Separate publication of the European search report
  • A4 document

    Supplementary search report

Corrected A document

  • A8 document

    Corrected title page of an A document, ie. A1 or A2 document.
  • A9 document

    Complete reprint of an A document, ie. A1, A2 or A3 document.

B document

European patent specification

  • B1 document

    European patent specification (granted patent)
  • B2 document

    New European patent specification (amended specification)
  • B3 document

    European patent specification (after limitation procedure)

Corrected B document

  • B8 document

    Corrected title page of a B document, ie. B1 or B2 document.
  • B9 document

    Complete reprint of a B document, ie. B1 or B2 document.

Publication date

Publication date of the original European patent document , ie. A1, A2, A3, B1, B2 or B3 document.

Issue date (of the correction)

Date of issue of the corrected version of a European patent document.

W1

Supplementary correction code indicating the first (1st) corrected version of a patent document

W2

Supplementary correction code indicating the second (2nd) corrected version of a patent document

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