The June issue of Patent Information News states that the EPO is in the process of reloading US assignment records into its legal status database. When the project is finished US patents in esp@cenet will be linked to more than six million assignments dating back to 1981. Assignment data has been available for some US docs in esp@cenet, but much of the data was corrupted by technical problems. I assume that this includes all the data available on the USPTO’s web assignment database and Cassis ASSIGN, although both give a slightly earlier start date of August 1980.
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Hey Michael, thanks for posting about this, and especially for adding the insights about the coverage of the web assignment database and Cassis! I've put a quick note on the Intellogist esp@cenet report to reflect this information.
The updated page is available at http://www.intellogist.com/wiki/Report:Esp@cenet/Major_Recent_Updates
-Kristin (From Intellogist.com)
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