Lapsed Apr 29, 2026 on the fee record · High confidence
20-year base term ends Nov 22, 2031
Third maintenance fee unpaid; grace period ended.
Held by Rambus Inc.
Filed Nov 22, 2011 as application 13/303,048 · Granted Apr 29, 2014
Base term, 20 years from filing, plus 167 days of patent term adjustment (USPTO delay)
Today
Lapsed Apr 29, 2026
2011
2032
Clock starts
Nov 22, 2011
Nov 22, 2011
No longer in force
Apr 29, 2026
Apr 29, 2026
Granted
Apr 29, 2014
Apr 29, 2014
Term would have run to
May 7, 2032
May 7, 2032
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
167
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. 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.
Its term would have run to May 7, 2032: its 20-year base term plus 167 days of term 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 Nov 22, 2011, when this application, 13/303,048, was filed | Nov 22, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +167 days, USPTO patent term adjustment record | May 7, 2032 | 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 | 2 of 3 maintenance fees paid | lapsed Apr 29, 2026 | High confidence |
| Computed term end | The steps above, in order | Apr 29, 2026 | High confidence |
This family
| US 8,713,379 | this patent 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 | In force 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.
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 |
|---|---|---|---|
| Apr 14, 2014 Reel 32666, frame 526 | Takefman, Michael L; Amer, Maher; Badelone, Riccardo | Diablo Technologies Inc. | Assignment of Assignor's Interest |
| Mar 6, 2015 Reel 35102, frame 842 | Diablo Technologies, Inc. | City National Bank | Security Interest |
| Jun 6, 2017 Reel 42619, frame 675 | Diablo Technologies, Inc. | City National Bank | Security Interest |
| Oct 10, 2018 Reel 47126, frame 468 | Diablo Technologies Inc. | Rambus Inc. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Note
The 167 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
318
later US patents cite this one
That is top 1% of utility patents granted in 2014 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.