Term ends Nov 22, 2031 · High confidence
20-year base term ends Nov 22, 2031
Held by Rambus Inc.
Filed Dec 31, 2018 as application 16/236,946 · Granted Jul 28, 2020
Base term, 20 years from filing
Today
2011
2031
Clock starts
Nov 22, 2011
Nov 22, 2011
Term ends
Nov 22, 2031
Nov 22, 2031
Granted
Jul 28, 2020
Jul 28, 2020
base term
fee events
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
11
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. 1 of 2 maintenance fees is 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 Nov 22, 2011, when application 13/303,048, the earliest non-provisional in its chain, was filed (this one was filed Dec 31, 2018) | Nov 22, 2031 | 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 | 1 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 22, 2031 | High confidence |
This family
| US 8,713,379 | Lapsed on the fee record Apr 2026 | Apr 2026 |
| US 8,972,805 | In force Nov 2031 | Nov 2031 |
| US 9,575,908 | In force Mar 2033 | Mar 2033 |
| US 9,779,020 | In force Sep 2033 | Sep 2033 |
| US 9,552,175 | In force May 2032 | May 2032 |
| US 9,444,495 | In force Nov 2031 | Nov 2031 |
| US 10,168,954 | In force Dec 2031 | Dec 2031 |
| US 10,725,704 | this patent Nov 2031 | Nov 2031 |
8 of 11 applications in this family shown, earliest filings first. 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
Nov 2031
Term ends Nov 22, 2031. Maintenance fees still fall due before then
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2020 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.