I am the inventor of patent #8,425,176. I would like to know the date at which I will be required to pay another maintenance fee.

  • 1
    I'm voting to close this question as off-topic because it's asking for specific legal advice which an online site like this cannot give.
    – user18033
    Jun 21, 2018 at 6:54

1 Answer 1


Please see this page: https://fees.uspto.gov/MaintenanceFees/fees/details?applicationNumber=12800886&patentNumber=8425176

The next maintenance fee payment window opens on 04/23/2020.

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