Term ended Oct 22, 2022 · High confidence
20-year base term ended Oct 22, 2022
USPTO later recorded it as expired for non-payment on Mar 6, 2023.
Held by Rampart Asset Management, LLC
Filed Jun 26, 2017 as application 15/633,677 · Granted Jan 29, 2019
Base term, 20 years from filing
Today
Term ended Oct 22, 2022
2002
2026
Clock starts
Oct 22, 2002
Oct 22, 2002
Term ended
Oct 22, 2022
Oct 22, 2022
Granted
Jan 29, 2019
Jan 29, 2019
base term
after the term ends
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.
None
Terminal disclaimer
No disclaimer on this record.
None due
Maintenance fees
This term ends before the first maintenance fee's grace period does, 4 years from grant, so no fee can end it early.
10
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. 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 Oct 22, 2002, when application 10/278,708, the earliest non-provisional in its chain, was filed (this one was filed Jun 26, 2017) | Oct 22, 2022 | 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 | None on record | no cap applied | 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 Mar 6, 2023, after the term ended | no change | High confidence |
| Computed term end | The steps above, in order | Oct 22, 2022 | High confidence |
This family
| US 7,668,276 | In force Jul 2028 | Jul 2028 |
| US 7,965,567 | Term ended Jan 2024 | Jan 2024 |
| US 8,542,787 | Term ended May 2023 | May 2023 |
| US 9,123,433 | Term ended Jan 2023 | Jan 2023 |
| US 9,099,194 | Term ended Jan 2023 | Jan 2023 |
| US 9,367,248 | Term ended Oct 2022 | Oct 2022 |
| US 9,721,642 | Term ended Oct 2022 | Oct 2022 |
| US 10,192,609 | this patent Oct 2022 | Oct 2022 |
8 of 10 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Sep 12, 2018 Reel 46851, frame 677 | Hampel, Craig E.; Perego, Richard E.; Sidiropoulos, Stefanos S.; Tsern, Ely K.; Ware, Frederick A. | Rambus Inc. | Assignment of Assignor's Interest |
| Dec 2, 2021 Reel 58298, frame 836 | Rambus Inc. | Highlands LLC | Assignment of Assignor's Interest |
| Dec 10, 2021 Reel 58956, frame 139 | Highlands LLC | Rampart Asset Management, LLC | Assignment of Assignor's Interest |
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.
Citations
4
later US patents cite this one
That is above the median of utility patents granted in 2019 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.