Examples of Patent Publication Number Formatting by Country

The publication number is another important component of a Patent and its format has the tendency to be varied depending on the national/regional state in which it is applied for.

As in the previous Examples of Application Number Formatting by Country, this article is based around the table below, which gives information on the top filing countries whose publication number format differ from the norm.  Used on its own or alongside the Application Number format table, it is an invaluable source of information.

Depending on the Intellectual Property Office, the number given to a published document may differ from the serial number given to its application upon filing.  Also, while some offices only make a single publication of a patent document, others publish separate documents at each procedural step during the processing of the application.  Different documents are usually distinguished by different kind codes

Country or OrganisationExample of Publication NumberCorrected Presentation adhering to Standard Format (EPODOC)Explanation
Australia (AU)AU-A-239746/05

AU-B-239746/05
AU 2005239746 A1

AU 2005239746 B2
A represents an unexamined patent publication.

B represents a granted patent.
Canada (CA)2739607CA 2739607 A1Same serial number as its application, with kind codes added at end.
China (CN)1097193CN 1097193 B


CN 1097193 C
"1" represents the type of property right (e.g. patent).

B represents an examined patent publication.

"C" represents a granted patent.
European Patent (EP)0100256EP 0100256 A1

EP 0100256 B1
All published patent documents relating to a particular application number receive the same publication number.

A1, A2 represent a published patent application.

A3 represents a European search report.

B1, B2 represent a granted patent.
France (FR)2795330 FR 2795330 A1Same serial number as its application.

A1, A2 represent a published patent application.

B1, B2 represent a granted patent.

Germany (DE)19500002DE 19500002 A1Same serial number as its application.

A1, B1, B2 represent a published patent application.

C1, C2 represent a granted patent.
Japan (JP)515760

4698830
JP 2001515760 A

JP 4698830 B2
Different serial number to its application.
"A" publications have different numbers to "B" publications, etc

A represents an unexamined patent publication.

B1, B2 represent an xamined patent publication.

C1, C2 represent a ganted patent.
Patent Cooperation Treaty (PCT)WO95/26134WO 9526134 A1The PCT code only applies to applications (a "PCT patent" does not exist). Therefore, the "WO" code is added in place of the PCT and Receiving Office code.

A1 represents an unexamined patent publication.

A9 represents a complete, corrected document.

B1 represents amended claims.
United Kingdom (GB)2376641 GB 2376641 APublication numbers are given as a continuous series.

A represents a published patent application.

B represents a granted patent.
United States of America (US)A 4,384,436

B1 4,384,436
US 4384436 A

US 4384436 B1
All published patent documents relating to a particular application number receive the same publication number.

A - Published patent.

B1, 2 - Re-examination of patent.