Term ends Mar 16, 2028 · High confidence
20-year base term ends Jun 29, 2027
Held by Aquesys, Inc.
Filed Nov 17, 2009 as application 12/620,564 · Granted May 2, 2017
Base term plus 261 days of patent term adjustment (USPTO delay)
Today
2007
2028
Clock starts
Jun 29, 2007
Jun 29, 2007
Term ends
Mar 16, 2028
Mar 16, 2028
Granted
May 2, 2017
May 2, 2017
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
261
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
65
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 261 days past its 20-year base term on prosecution delay. 2 of 2 maintenance fees are paid so far. 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 Jun 29, 2007, when application 11/771,805, the earliest non-provisional in its chain, was filed (this one was filed Nov 17, 2009) | Jun 29, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +261 days, USPTO patent term adjustment record | Mar 16, 2028 | 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 | 2 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 16, 2028 | High confidence |
This family
| Application 11/771,805 | Abandoned not computed | not computed |
| US 9,636,254 | this patent Mar 2028 | Mar 2028 |
| Application 12/620,552 | Abandoned not computed | not computed |
| Application 12/620,557 | Abandoned not computed | not computed |
| Application 12/620,561 | Abandoned not computed | not computed |
| Application 12/946,351 | Abandoned not computed | not computed |
| US 8,801,766 | In force May 2032 | May 2032 |
| US 9,095,411 | In force Apr 2031 | Apr 2031 |
8 of 65 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 |
|---|---|---|---|
| Sep 13, 2010 Reel 24976, frame 766 | Yu, Dao-yi; Anderson, Cory; Trip, Roelof; Yang, Ying; Nguyen, Hoang Van; Mantri, Surag; Su, Er-ning; Cringle, Stephen; McCrea, James; Mufson, Daniel; Tan, Colin | Aquesys, 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
Mar 2028
Term ends Mar 16, 2028. No further fees fall due before then
Note
The 261 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
135
later US patents cite this one
That is top 5% of utility patents granted in 2017 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.