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X-Ref PCT Book - Edition 2025


The Cross-Referenced Patent Cooperation Treaty compiled by Roel van Woudenberg and Cees Mulder has been a bestseller since it was first published in 2003. 

The 2025 edition of The Cross-Referenced PCT book is the twenty-third edition of the book and takes account of the Regulations under the PCT as in force effective 1 July 2025. ​​

​Detailed information about the A4 size book can be found here
.

The current edition of The X-Ref PCT is required if you are preparing for the European Qualifying Examination (EQE) in March 2026.

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