Public PAIR

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Public PAIR (Patent Application Retrieval Portal) is a portal provided by the United States Patent and Trademark Office (USPTO) to check the status of U.S. patent applications and gain access to the correspondence documents between the applicant and the patent examiner for issued or published applications.

Public PAIR does not require registration with the USPTO. To access Public PAIR, all you need is a patent, application, publication, or PCT number that you want to search.

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