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As the title states, does google patents update the patent information for applications that have been amended?

For example: I file a patent initially with X number of claims. It is published at the 18 month mark. Google patents picks it up and it is now discover-able via google patents. But then I amend the claims before examination. Will google update the claims?

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NO

Google Patents and other sites that allow for searching patents show publications. Once published, a particular publication is a static thing - like a book. Following the normal course, patent applications are published twice, once at the 18 month point and then, if granted, in the final allowed state. That is what you see on patent search sites.

However, after initial publication the public can view all of the back-and-forth between the applicant and the examiner including rejections, arguments and amendments. You could piece together intermediate versions from that information. In the USPTO this is via the site PUBLIC PAIR. At the EPO it is the EP Register.

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    Adding links would make this good answer even better.
    – Eric S
    Aug 22 '20 at 13:24
  • Thanks. And what if I requested republication? How long does it take? And would the re-published version be updated in Google patents?
    – XRRX
    Aug 22 '20 at 22:20
  • Why do you want republication?
    – George White
    Aug 22 '20 at 23:30
  • @XRRX As George White asks, why would you want to republish an application. Everyone knows claims change between application publication and patent grant. Sometimes there are several revisions.
    – Eric S
    Aug 23 '20 at 0:55
  • I do not know the OP's reason. People can do it to improve what is called "provisional rights". Nothing at all to do with provisional applications. In the case that a patent issues and an infringement is found, it is possible to get royalties back to the publication of the application under some circumstances. A key criteria is that a claim found infringed was present in the published application in substantially the same form. If you are aware of a potential infringer you might tailor claims to target their product put them on notice by re-publishing. A fairly sophisticated tactic.
    – George White
    Aug 23 '20 at 1:10

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