Term ends Aug 5, 2029 · High confidence
20-year base term ends Aug 5, 2029
Held by Hypres, Inc.
Filed Apr 11, 2016 as application 15/095,768 · Granted Dec 5, 2017
Base term, 20 years from filing
Today
2009
2029
Clock starts
Aug 5, 2009
Aug 5, 2009
Term ends
Aug 5, 2029
Aug 5, 2029
Granted
Dec 5, 2017
Dec 5, 2017
base term
fee events
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,249,540, US 8,977,223, to Aug 5, 2029. The term already ends on or before that date, so the cap shortened nothing.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
7
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 2 of 2 maintenance fees are paid so far. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Aug 5, 2009, when application 12/535,843, the earliest non-provisional in its chain, was filed (this one was filed Apr 11, 2016) | Aug 5, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,249,540, US 8,977,223) | resolves to Aug 5, 2029, 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 | In force | High confidence |
| Computed term end | The steps above, in order | Aug 5, 2029 | High confidence |
This family
| US 8,249,540 | In force Mar 2031 | Mar 2031 |
| US 8,401,509 | In force (reinstated) Aug 2029 | Aug 2029 |
| US 8,977,223 | In force Aug 2029 | Aug 2029 |
| US 9,312,895 | In force Aug 2029 | Aug 2029 |
| US 9,838,051 | this patent Aug 2029 | Aug 2029 |
| US 10,097,221 | In force Aug 2029 | Aug 2029 |
| US 10,630,326 | In force Aug 2029 | Aug 2029 |
The applications whose file history this site holds. The family may have others.
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.
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Alerts on its grants, lapses and transfers.
What's changing
Aug 2029
Term ends Aug 5, 2029. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,249,540, US 8,977,223, ends no earlier than this term, so it caps nothing.
Citations
4
later US patents cite this one
That is below the median of utility patents granted in 2017 in our data, the only group it is compared against.
How we rank
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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.