National Informatics Centre (India)

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The National Informatics Centre of India provides a search system for the bibliographic data of Indian and non-Indian patent documents. Users can enter queries through five different types of search forms for non-Indian patent documents:

  • Unique Field Search - Patent number, Patent number without publishing country, Priority number, or Application number
  • Single Field Search - Title, Inventor, Applicant/Assignee, or IPC Classification
  • Combined Field Search - Users can combine search terms from the fields of year (drop-down menu), IPC code, applicant name, inventor name, and keywords in title. Wildcard operators (*) and Boolean operators are supported through this form.[1]
  • Equivalent Search - Users can search for all equivalent documents for a particular patent document by providing a publishing country and patent number.
  • US Patents Citation - Users can search for all cited and citing documents for US Patents (5500000 onwards).

Users can also search for Indian patents through four of the same search forms: Unique Field Search, Single Field Search, Combined Field Search and Equivalent Search. Only bibliographic data is provided for all patent documents. A list of field indicators and corresponding descriptions is available here.


  1. "Bibliography Search." NIC website, Accessed April 28, 2011.

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