Lapsed Sep 15, 2023 on the fee record · High confidence
20-year base term ends Jan 3, 2032
Second maintenance fee unpaid; grace period ended.
Filed Sep 20, 2012 as application 13/623,309 · Granted Sep 15, 2015
Base term, 20 years from filing, plus 541 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Sep 15, 2023
2012
2032
Clock starts
Jan 3, 2012
Jan 3, 2012
No longer in force
Sep 15, 2023
Sep 15, 2023
Granted
Sep 15, 2015
Sep 15, 2015
Term would have run to
Jan 3, 2032
Jan 3, 2032
base term
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
541
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,297,916, US 8,747,055, US 8,770,922, US 8,814,503, US 8,899,915.
1 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.
53
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 3, 2032: its 20-year base term plus 541 days of term adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Jan 3, 2012, when application 13/342,508, the earliest non-provisional in its chain, was filed (this one was filed Sep 20, 2012) | Jan 3, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +541 days, USPTO patent term adjustment record | Jun 27, 2033 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,297,916, US 8,747,055, US 8,770,922, US 8,814,503, US 8,899,915) | capped to Jan 3, 2032 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Sep 15, 2023 | High confidence |
| Computed term end | The steps above, in order | Sep 15, 2023 | High confidence |
This family
| US 8,297,916 | In force Jan 2032 | Jan 2032 |
| US 9,133,729 | this patent Sep 2023 | Sep 2023 |
| US 9,631,558 | In force Jan 2032 | Jan 2032 |
| US 9,410,608 | In force Jan 2032 | Jan 2032 |
| US 9,523,422 | In force May 2033 | May 2033 |
| US 8,747,055 | In force Jan 2032 | Jan 2032 |
| Application PCT/US2013/060105 | PCT application no patent term | no patent term |
| US 8,770,922 | In force Jan 2032 | Jan 2032 |
8 of 53 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 |
|---|---|---|---|
| Jul 22, 2013 Reel 30846, frame 222 | McCune, Michael E.; Husband, Jason | United Technologies Corporation | Assignment of Assignor's Interest |
| Oct 4, 2021 Reel 57767, frame 386 | United Technologies Corporation | Raytheon Technologies Corporation | Change of Name |
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 541 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,297,916, US 8,747,055, US 8,770,922, US 8,814,503, US 8,899,915.
Citations
36
later US patents cite this one
That is top 25% of utility patents granted in 2015 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.