Search by date added to register

All dates must be on or before today's date. The date that appears is the date that the patent lists were most recently amended. In addition, patent lists that were amended prior to November 2006 are not searchable.

Examples:

1. To search all patents amended before a specific date, leave the "From" field empty and enter the date in the "To" field, e.g. for all patents amended before 2008, enter 2007-12-31 in the "To" field.
   
   
2. To search for patents based on a date amended range, there must be date values entered in both the "From" and "To" fields, e.g. for patents that were amended in 2008, enter 2008-01-01 in the "From" field and 2008-12-31 in the "To" field.