Term ends Aug 24, 2030 · High confidence
20-year base term ends Nov 22, 2029
Held by Zymeflow, Inc.
Filed Nov 22, 2009 as application 12/623,435 · Granted Apr 16, 2013
Base term plus 275 days of patent term adjustment (USPTO delay)
Today
2009
2030
Clock starts
Nov 22, 2009
Nov 22, 2009
Term ends
Aug 24, 2030
Aug 24, 2030
Granted
Apr 16, 2013
Apr 16, 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
275
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.
This patent's term runs 275 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 Nov 22, 2009, when this application, 12/623,435, was filed | Nov 22, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +275 days, USPTO patent term adjustment record | Aug 24, 2030 | 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 | Aug 24, 2030 | High confidence |
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 24, 2010 Reel 23836, frame 752 | Frost, Jack G. | United Laboratories International, LLC | Assignment of Assignor's Interest |
| Oct 2, 2013 Reel 31327, frame 650 | United Laboratories International, LLC | Texas Capital Bank, National Association | Security Agreement |
| Jan 5, 2015 Reel 34631, frame 429 | United Laboratories International, LLC; Global Vapor Control, Inc. | Abacus Finance Group, LLC, as Agent | Security Interest |
| Jan 5, 2015 Reel 34634, frame 719 | Texas Capital Bank, National Association | United Laboratories International, LLC | Release of Security Interest |
| Sep 8, 2023 Reel 64839, frame 568 | Abacus Finance Group LLC | United Laboratories International LLC | Release of Security Interest |
| Mar 12, 2025 Reel 70491, frame 243 | United Laboratories International, LLC | Tristar Global Energy Solutions, Inc. | Merger |
| Mar 13, 2025 Reel 70508, frame 396 | Tristar Global Energy Solutions, Inc. | CR3 Zymeflow, Inc. | Merger |
| Mar 15, 2025 Reel 70523, frame 169 | CR3 Zymeflow, Inc. | Zymeflow, Inc. | Merger |
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
Aug 2030
Term ends Aug 24, 2030. No further fees fall due before then
Note
The 275 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
3
later US patents cite this one
That is below the median 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.