Patent Retriever

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Patent Retriever is a free patent download service that allows users to enter the patent number for a single document or up to 10 documents in order to receive direct links to download the patent documents. Patent Retriever describes itself as a "not-really-for profit organisation" which does include advertisements on many parts of website, but all download services provided by the site are free.[1] Users can download documents (granted patents and published applications) from the following authorities in PDF format:[2]

  • EPO
  • WIPO (PCT)

A complete list of countries covered by Patent Retriever can be found on the FAQ page of the website. Users may need to complete a "captcha challenge" to verify that they are human before downloading the document. All documents are downloaded through free patent online search systems, like the issuing authority's website or through Google Patent.


The FAQ section of Patent Retriever defines the correct format for entering patent numbers into the document search form:[2]

  • Two letter patent office code followed by the number
  • Upper case or lower case for letters is OK
  • You don't need to add the Kind Code at the end of the patent number
  • The "/" and "," characters will usually be ignored unless its a US application number

Examples are also given of the correct format for US patent and application, EP application, and WIPO publication numbers. Users can mouse over the "Examples of Use" link below the search form to view these examples.

The user enters the correct format of a single document number into the search form on the main page, or the user can choose the "Batch Download" option to download up to 10 patent documents. After submitting the document numbers, the site will give you a list of links (often two possible links for each document) where you can download the PDF of the document or save the link to your computer. Patent Retriever warns you below the link if the user first has to complete a captcha challenge before downloading the document.


  1. "About PatentRetriever." Patent Retriever website, Accessed September 1, 2011.
  2. 2.0 2.1 "FAQ." Patent Retriever website, Accessed September 1, 2011.

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