http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
United States Patent and Trademark Office datasets
Updated daily (except weekends and federal holidays)
The patent and trademark data presented here is gathered into accessible collections including: historical patent data, patent application classification information, patent assignment data, prosecution history files, published patent applications, trademark application images, and trademark applications.
The data products are available as.zip downloads in ASCII, XML, TIFF, or PDF formats. Datasets can be further filtered by date ranges.