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Master Classification File (MCF) / Patent Grant (Classification Sequence)...
Current U.S. classification information for all patent grants issued by the U.S. Patent and Trademark Office from 1790 to Present. Approximately 450 main divisions of... -
Patent Grant Maintenance Fee Events (September 1, 1981 - Present)
Contains recorded maintenance fee events for patents granted from September 1, 1981 to Present. Each new weekly file is cumulative. The file format is ASCII. Available weekly... -
Image File Wrapper (IFW) Petition Decisions (January 2003 - April 2012)
Contains the images of USPTO Petition Decisions from the USPTO Image File Wrapper (IFW) System, one of the components of the USPTO Public Patent Application Information... -
Patent Grant Maintenance Fee Events (September 1, 1981 - Present)
Contains recorded maintenance fee events for patents granted from September 1, 1981 to Present. Each new weekly file is cumulative. The file format is ASCII. Available weekly... -
Master Classification File (MCF) / Patent Grant (Patent Grant Sequence)...
Current U.S. classification information for all patent grants issued by the U.S. Patent and Trademark Office from 1790 to Present. Approximately 450 main divisions of...