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How does the coverage of Ipsum compare to public PAIR?

The bibliographic details and legal status of the document are on the main page of the record under the “Case Details” section, along with the option to view the document record on Espacenet.

A small side menu (titled “Select case view”) allows the user to access other sections of the document record: The search function in Ipsum is slightly easier than public PAIR, since the user doesn’t need to enter a re CAPTCHA on Ipsum.

Public PAIR has broader coverage of US patent documents dating back to 2001, while Ipsum only covers GB patent applications back to the beginning of 2008.

Public PAIR has existed for over seven years, while the full version of Ipsum was only released this year, so it is understandable that Ipsum has limited coverage dating back only about 3 years.

Why does public PAIR have longer coverage of US patent documents than Ipsum’s coverage of GB documents?

Probably because the full version of Ipsum was released only this month, while public PAIR was released in 2004.

The following documents (unless excluded for one of the reasons set out below) from the open part of the file are available for GB patent applications published after 1 January 2008 (i.e.

with a publication number of GB2439518 or greater): Data available in public PAIR covers US patent documents from 2001-present, according to

Neither Ipsum nor PAIR provide access to all patent file histories in the US or UK, so where can you go to access a broader collection of file histories?

Landon IP has one of the largest collections of electronic patent file histories in the world, representing access to over 150,000 patent files.

When users search for the status and File Wrapper of a US patent document in PAIR, they can choose to search by application number, control number, patent number, PCT number, or publication number.