Term ends Dec 6, 2037 · High confidence
20-year base term ends May 2, 2037
Held by WestRock Packaging Systems, LLC
Filed Aug 11, 2022 as application 17/886,218 · Granted Jul 14, 2026
Base term plus 218 days of patent term adjustment (USPTO delay)
Today
2017
2037
Clock starts
May 2, 2017
May 2, 2017
Term ends
Dec 6, 2037
Dec 6, 2037
Granted
Jul 14, 2026
Jul 14, 2026
base term
patent term adjustment
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
218
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
4
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 runs 218 days past its 20-year base term on prosecution delay. 0 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 May 2, 2017, when application PCT/US2017/030486, the earliest non-provisional in its chain, was filed (this one was filed Aug 11, 2022) | May 2, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +218 days, USPTO patent term adjustment record | Dec 6, 2037 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 6, 2037 | High confidence |
This family
| Application PCT/US2017/030486 | PCT application no patent term | no patent term |
| US 11,420,802 | In force Dec 2037 | Dec 2037 |
| US 12,679,615 | this patent Dec 2037 | Dec 2037 |
| Application 19/741,367 | Pending not computed | not computed |
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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Dec 2037
Term ends Dec 6, 2037. Maintenance fees still fall due before then
Note
The 218 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
We have no citation count for this patent yet. That is not the same as never having been cited.
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.