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LitAlert is a patent litigation database produced by Thomson Reuters. It is currently available via Dialog, STN, and Westlaw, as well as Questel-Orbit. Officially, the database includes "all IP lawsuits reported to the Commissioner of the USPTO from 1973 to date."
Although it is not as timely as litigation databases that collect their data through other means, relying on the backfile of paper notices sent to the USPTO means that database records extend back as far as 1973. One other benefit of this methodology is that the database contains thousands of litigation records not published in the Official Gazette back to the 1970s.
Records contain data such as the docket number, the names of the plaintiff and defendant, their representation, and the dates of filing and judgment, as well as a “description of action taken” field. Records also include a “notes” section that may contain data related to the case itself, or to the location of the case filing and whether it is available to researchers at the USPTO. The file is updated weekly.
The Dialog bluesheet for this product is available here.