How can I lookup the next patent maintenance fee due on a patent? For example, I need to know when the fee is due for number 7833190. Where do I look?
You can find this out on the US Public Pair site. According to Pair, your next fee first day to pay date is 11/16/2021. The surcharge date is 05/17/2022 and your last day to pay date is 11/16/2022.