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US 9,495,817 Term endedTerm ended Nov 29, 2019 · Low confidence
20-year base term ended Nov 29, 2019
USPTO later recorded it as expired for non-payment on Dec 21, 2020.
Nov 29, 1999
Nov 29, 2019
Nov 15, 2016
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Nov 29, 1999, when the earliest non-provisional application in its chain was filed (this one was filed Mar 13, 2015); a parent in its chain could not be resolved (the next row) | Nov 29, 2019 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,978,977) | resolves to Nov 29, 2019, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | No maintenance fee can end the term early | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Dec 21, 2020, after the term ended | no change | High confidence |
| Further caveats on record | The record names parents not resolved: 09451207, 09451207, 09451207, 09451207 | Low confidence overall | Low confidence |
| Computed term end | The steps above, in order | Nov 29, 2019 | Low confidence |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
Not on this page: the patent's family, its recorded assignments and its citation count. USPTO's assignment records, linked above, list every recorded assignment.
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.