How complete is Delphion Research data?
We offer the most complete set of patent data available. We have patent data from the top six patent databases in the world, including US, European, WIPO, Japanese, INPADOC and Derwent World Patent Index collections. See our Collection Descriptions for further information, or our Coverage Dates and Update Schedule page for the range of dates available in each collection. Though we strive to maintain accurate, complete and current data, in some cases the published data itself is not complete, so there is a small percentage of patents (especially older ones) that we do not have, or that are incomplete.
