Latest DWPI Updates

DWPI Coverage Tables

The content in DWPI is updated regularly and records are kept of all updates made. In the DWPI coverage table below the latest publication date is provided for each kind of patent included in that update. This does not necessarily include all documents for that publication date: some may have been included in earlier updates, and some may appear in future updates. The number of patent records for each publication kind is the total of new, edited, amended and corrected records included in the update.

DWPI Coverage for Update 201914

Archive 2017

Archive 2018

Archive 2019


DWPI Update Dates

Dates of data loaded into STN from 1994 to present

Deleted DWPI Records– List of records deleted from DWPI


Other update news

2015 Revision To DWPI Non-Structural Fragmentation Codes

Chinese dual filings are now linked within DWPI families

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