Term ended Jan 2, 2023 · High confidence
20-year base term ended Oct 22, 2022
USPTO later recorded it as expired for non-payment on Oct 9, 2023.
Held by Rampart Asset Management, LLC
Filed Jul 24, 2013 as application 13/949,982 · Granted Sep 1, 2015
Base term plus 161 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Term ended Jan 2, 2023
2002
2026
Clock starts
Oct 22, 2002
Oct 22, 2002
Term ended
Jan 2, 2023
Jan 2, 2023
Granted
Sep 1, 2015
Sep 1, 2015
base term
patent term adjustment
after the term ends
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
161
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 9,099,194.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
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 runs 161 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Jul 24, 2013) | Oct 22, 2022 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +161 days, USPTO patent term adjustment record | Apr 1, 2023 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,099,194) | capped to Jan 2, 2023 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 1 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Oct 9, 2023, after the term ended | no change | High confidence |
| Computed term end | The steps above, in order | Jan 2, 2023 | 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 | this patent 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 | Term ended 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 |
|---|---|---|---|
| Jun 25, 2015 Reel 35908, frame 362 | 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.
What's changing
Note
The 161 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 9,099,194.
Citations
6
later US patents cite this one
That is below the median of utility patents granted in 2015 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.