The Indian Patent Office launched an improved version ("iPairs 2.0") of its public patent search database in late April 2012. With the relaunch, the number of pre-defined search fields has been increased, the possibilities of combining the search items have been extended and a number of search operators have been introduced. Instructions on how to use the new search functions are available in a help file.
For granted patents, the data is available from 1912 onwards. For patent applications filed after 1 January 1995, the full details including complete specifications, original documents and e-register information have been included.