Also listed on Liquid Light, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends May 12, 2031 · High confidence
20-year base term ends Jul 29, 2030
Held by Carbeau B.V.
Filed Jul 29, 2010 as application 12/845,995 · Granted Aug 6, 2013
Base term plus 287 days of patent term adjustment (USPTO delay)
Today
2010
2031
Clock starts
Jul 29, 2010
Jul 29, 2010
Term ends
May 12, 2031
May 12, 2031
Granted
Aug 6, 2013
Aug 6, 2013
base term
patent term adjustment
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
287
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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.
20
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 runs 287 days past its 20-year base term on 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 Jul 29, 2010, when this application, 12/845,995, was filed | Jul 29, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +287 days, USPTO patent term adjustment record | May 12, 2031 | 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 12, 2031 | High confidence |
This family
| Application 12/846,221 | Abandoned not computed | not computed |
| US 8,721,866 | Lapsed on the fee record May 2026 | May 2026 |
| US 8,500,987 | this patent May 2031 | May 2031 |
| US 8,845,877 | Lapsed on the fee record Sep 2026 | Sep 2026 |
| US 8,524,066 | Lapsed on the fee record Sep 2025 | Sep 2025 |
| Application 61/504,848 | Provisional application no patent term | no patent term |
| Application PCT/US2011/045515 | PCT application no patent term | no patent term |
| Application PCT/US2011/045534 | PCT application no patent term | no patent term |
8 of 20 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 29, 2010 Reel 24760, frame 286 | Teamey, Kyle; Cole, Emily Barton; Sivasankar, Narayanappa; Bocarsly, Andrew | Liquid Light, Inc. | Assignment of Assignor's Interest |
| Dec 7, 2016 Reel 40644, frame 921 | Liquid Light, Inc. | Ares Capital Corporation | Assignment of Assignor's Interest |
| Jan 13, 2017 Reel 41033, frame 406 | Ares Capital Corporation | Avantium Holding B.V. | Assignment of Assignor's Interest |
| Jan 27, 2017 Reel 41214, frame 698 | Avantium Holding B.V. | Avantium Knowledge Centre B.V. | Assignment of Assignor's Interest |
| Aug 24, 2026 Reel 75753, frame 81 | Avantium Knowledge Centre B.V. | Carbeau B.V. | 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.
What's changing
May 2031
Term ends May 12, 2031. No further fees fall due before then
Note
The 287 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
72
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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.