Lapsed Dec 31, 2025 on the fee record · High confidence
20-year base term ends Sep 7, 2027
Third maintenance fee unpaid; grace period ended.
Held by Ambrx, Inc.
Filed Mar 4, 2009 as application 12/440,010 · Granted Dec 31, 2013
Base term, 20 years from filing, plus 130 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Dec 31, 2025
2007
2027
Clock starts
Sep 7, 2007
Sep 7, 2007
No longer in force
Dec 31, 2025
Dec 31, 2025
Granted
Dec 31, 2013
Dec 31, 2013
Term would have run to
Sep 7, 2027
Sep 7, 2027
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
130
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 7,919,591.
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.
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 7, 2027: its 20-year base term plus 130 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 Sep 7, 2007, when application PCT/US2007/019528, the earliest non-provisional in its chain, was filed (this one was filed Mar 4, 2009) | Sep 7, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +130 days, USPTO patent term adjustment record | Jan 15, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,919,591) | capped to Sep 7, 2027 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | lapsed Dec 31, 2025 | High confidence |
| Computed term end | The steps above, in order | Dec 31, 2025 | High 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 | this patent 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 | Lapsed on the fee record 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 |
|---|---|---|---|
| Jan 11, 2010 Reel 23761, frame 889 | Sheffer, Joseph; Norman, Thea; Dimarchi, Richard D.; Hays Putnam, Anna-maria A.; 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 130 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 7,919,591.
Citations
63
later US patents cite this one
That is top 10% 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.