Lapsed Jul 7, 2019 on the fee record · Medium confidence
20-year base term ends Sep 7, 2027
Why Medium: A terminal disclaimer is on file (approved) with no resolved reference, so the term may end earlier.
First maintenance fee unpaid; grace period ended.
Held by Ambrx, Inc.
Filed Aug 11, 2011 as application 13/208,136 · Granted Jul 7, 2015
Base term, 20 years from filing, plus 735 days of patent term adjustment (USPTO delay)
Today
Lapsed Jul 7, 2019
2007
2029
Clock starts
Sep 7, 2007
Sep 7, 2007
No longer in force
Jul 7, 2019
Jul 7, 2019
Granted
Jul 7, 2015
Jul 7, 2015
Term would have run to
Sep 11, 2029
Sep 11, 2029
base term
patent term adjustment
after the term ends
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
735
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
0 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.
9
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 11, 2029: its 20-year base term plus 735 days of term adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Medium. 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 7, 2007, when application PCT/US2007/019528, the earliest non-provisional in its chain, was filed (this one was filed Aug 11, 2011) | Sep 7, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +735 days, USPTO patent term adjustment record | Sep 11, 2029 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | lapsed Jul 7, 2019 | High confidence |
| Computed term end | The steps above, in order | Jul 7, 2019 | Medium confidence |
This family
| Application PCT/US2007/019528 | PCT application no patent term | no patent term |
| US 8,022,186 | Lapsed on the fee record Sep 2019 | Sep 2019 |
| US 8,053,560 | Lapsed on the fee record Nov 2023 | Nov 2023 |
| US 7,919,591 | In force Sep 2027 | Sep 2027 |
| US 8,618,257 | Lapsed on the fee record Dec 2025 | Dec 2025 |
| Application 13/035,719 | Abandoned not computed | not computed |
| Application 13/184,889 | Abandoned not computed | not computed |
| US 9,074,010 | this patent Jul 2019 | Jul 2019 |
8 of 9 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 22, 2014 Reel 32722, frame 154 | Sheffer, Joseph; Norman, Thea C; Dimarchi, Richard D; Putnam, Anna-maria A. Hays; Tian, Feng; Chu, Stephanie; Krawitz, Denise; Cho, Ho Sung | Ambrx, 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
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 735 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Jul 7, 2019. We will not guess the cap.
Citations
18
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.