Lapsed May 27, 2026 on the fee record · High confidence
20-year base term ends Sep 14, 2029
Third maintenance fee unpaid; grace period ended.
Held by Rambus Inc.
Filed Apr 30, 2013 as application 13/873,633 · Granted May 27, 2014
Base term, 20 years from filing
Today
Lapsed May 27, 2026
2009
2029
Clock starts
Sep 14, 2009
Sep 14, 2009
No longer in force
May 27, 2026
May 27, 2026
Granted
May 27, 2014
May 27, 2014
Term would have run to
Sep 14, 2029
Sep 14, 2029
base term
after the term ends
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,452,917, to Sep 14, 2029. The term already ends on or before that date, so the cap shortened nothing.
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.
4
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 Sep 14, 2029: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Sep 14, 2009, when application 12/559,185, the earliest non-provisional in its chain, was filed (this one was filed Apr 30, 2013) | Sep 14, 2029 | 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 | Disclaimer resolved from the filed document (refs US 8,452,917) | resolves to Sep 14, 2029, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | lapsed May 27, 2026 | High confidence |
| Computed term end | The steps above, in order | May 27, 2026 | High confidence |
This family
| US 8,452,917 | In force Mar 2032 | Mar 2032 |
| US 8,738,853 | this patent May 2026 | May 2026 |
| US 9,015,408 | In force Sep 2029 | Sep 2029 |
| US 9,465,557 | In force Sep 2029 | Sep 2029 |
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 30, 2013 Reel 30322, frame 311 | Amer, Maher, MR.; Takefman, Michael Lewis, MR. | Diablo Technologies Inc. | Assignment of Assignor's Interest |
| Apr 30, 2013 Reel 30322, frame 322 | Diablo Technologies Inc. | Diablo Technologies Inc. | Change of Address of Company |
| Mar 6, 2015 Reel 35102, frame 842 | 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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,452,917, ends no earlier than this term, so it caps nothing.
Citations
129
later US patents cite this one
That is top 5% 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.