United States Patent and Trademark Office – Patent and Trademark Office Notices

Notice of Expiration of Patents Due to Failure to Pay Maintenance Fee 35 U.S.C 41 and 37 CFR 1.362(g) provide that if the required maintenance fee and any applicable surcharge are not paid in a patent requiring such payment, the patent will expire at the end of the 4th, 8th or 12th anniversary of the grant of the paten…

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