Term ends May 21, 2029 · High confidence
20-year base term ends May 21, 2029
Filed Apr 25, 2012 as application 13/455,152 · Granted Sep 17, 2013
Base term, 20 years from filing
Today
2009
2029
Clock starts
May 21, 2009
May 21, 2009
Term ends
May 21, 2029
May 21, 2029
Granted
Sep 17, 2013
Sep 17, 2013
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.
3 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.
3
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. All three maintenance fees are recorded paid; no more fees are due. 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 May 21, 2009, when application 12/470,028, the earliest non-provisional in its chain, was filed (this one was filed Apr 25, 2012) | May 21, 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 | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | May 21, 2029 | High confidence |
This family
| US 7,960,282 | In force Sep 2029 | Sep 2029 |
| US 8,236,688 | In force May 2029 | May 2029 |
| US 8,536,705 | this patent May 2029 | May 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 |
|---|---|---|---|
| Aug 14, 2013 Reel 31002, frame 921 | Yelehanka, Pradeep Ramachandramurthy; Tan, Denise; Lek, Chung Meng; Thiam, Thomas; Lam, Jeffrey C.; Hsia, Liang-choo | Chartered Semiconductor Manufacturing Ltd. | Assignment of Assignor's Interest |
| Aug 14, 2013 Reel 31013, frame 507 | Chartered Semiconductor Manufacturing Ltd. | Chartered Semiconductor Manufacturing Pte. Ltd. | Change of Name |
| Aug 14, 2013 Reel 31013, frame 519 | Chartered Semiconductor Manufacturing Pte. Ltd. | GlobalFoundries Singapore Pte. Ltd. | Change of Name |
| Nov 27, 2018 Reel 47660, frame 203 | GlobalFoundries Singapore Pte. Ltd. | Wilmington Trust, National Association | Security Agreement |
| Nov 19, 2020 Reel 54481, frame 673 | Wilmington Trust, National Association | GlobalFoundries Singapore Pte. Ltd. | Release of Security 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
May 2029
Term ends May 21, 2029. No further fees fall due before then
Citations
15
later US patents cite this one
That is above the median of utility patents granted in 2013 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.