Lapsed Oct 27, 2021 on the fee record · High confidence
20-year base term ended Nov 30, 2025
Third maintenance fee unpaid; grace period ended.
Held by Rambus Inc.
Filed Nov 30, 2005 as application 11/292,407 · Granted Oct 27, 2009
Base term, 20 years from filing, plus 414 days of patent term adjustment (USPTO delay)
Today
Lapsed Oct 27, 2021
2005
2027
Clock starts
Nov 30, 2005
Nov 30, 2005
No longer in force
Oct 27, 2021
Oct 27, 2021
Granted
Oct 27, 2009
Oct 27, 2009
Term would have run to
Jan 18, 2027
Jan 18, 2027
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
414
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.
6
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 Jan 18, 2027: its 20-year base term plus 414 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 30, 2005, when this application, 11/292,407, was filed | Nov 30, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +414 days, USPTO patent term adjustment record | Jan 18, 2027 | 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 Oct 27, 2021 | High confidence |
| Computed term end | The steps above, in order | Oct 27, 2021 | High confidence |
This family
| US 7,610,417 | this patent Oct 2021 | Oct 2021 |
| US 8,078,775 | Lapsed on the fee record Dec 2023 | Dec 2023 |
| US 8,281,055 | Lapsed on the fee record Oct 2024 | Oct 2024 |
| US 8,707,009 | Term ended Dec 2025 | Dec 2025 |
| US 10,043,560 | Lapsed on the fee record Aug 2026 | Aug 2026 |
| US 11,302,371 | In force Nov 2026 | Nov 2026 |
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 |
|---|---|---|---|
| Nov 30, 2005 Reel 17324, frame 138 | Shaeffer, Ian | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 414 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
8
later US patents cite this one
That is below the median of utility patents granted in 2009 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.