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Contains recorded maintenance fee events for patents granted from September 1, 1981 to present. Each new weekly file is cumulative.
Tags ascii event code grant maintenance fee patent and 2 more
Updated
June 25 2020
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4,477

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Use this API to search the Office of the Chief Economist (OCE) Patent Examination Event Codes Dataset 2015
Tags api event code examination oce office of the chief economist and 2 more
Updated
June 25 2020
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3,553