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US 8,794,527 Term endedTerm ended Mar 16, 2025 · Low confidence
20-year base term ended Mar 16, 2025
USPTO later recorded it as expired for non-payment on Sep 7, 2026.
Mar 16, 2005
Mar 16, 2025
Aug 5, 2014
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Mar 16, 2005, when the earliest non-provisional application in its chain was filed (this one was filed Nov 26, 2012); a parent in its chain could not be resolved (the next row) | Mar 16, 2025 | 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 7,429,000, US 8,317,102) | resolves to Mar 16, 2025, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Sep 7, 2026, after the term ended | no change | High confidence |
| Further caveats on record | The record names parents not resolved: 11082190, 11082190, 11082190 | Low confidence overall | Low confidence |
| Computed term end | The steps above, in order | Mar 16, 2025 | 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.