Term ends Sep 8, 2032 · Medium confidence
20-year base term ends Feb 21, 2032
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 9,512,019), so the cap could be lower.
Held by Zymeflow, Inc.
Filed Feb 24, 2015 as application 14/630,244 · Granted Mar 20, 2018
Base term plus 335 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2012
2032
Clock starts
Feb 21, 2012
Feb 21, 2012
Term ends
Sep 8, 2032
Sep 8, 2032
Granted
Mar 20, 2018
Mar 20, 2018
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
335
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 10,052,583, US 10,093,869, US 8,993,488, US 9,512,019, US 9,815,720.
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.
5
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 335 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 2 of 3 maintenance fees are paid so far. 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 Feb 21, 2012, when application 13/401,336, the earliest non-provisional in its chain, was filed (this one was filed Feb 24, 2015) | Feb 21, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +335 days, USPTO patent term adjustment record | Jan 21, 2033 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,052,583, US 10,093,869, US 8,993,488, US 9,512,019, US 9,815,720) | capped to Sep 8, 2032 | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 8, 2032 | Medium confidence |
This family
| US 8,993,488 | Lapsed on the fee record Mar 2023 | Mar 2023 |
| Application PCT/US2012/026172 | PCT application no patent term | no patent term |
| US 9,920,236 | this patent Sep 2032 | Sep 2032 |
| US 10,526,527 | In force Feb 2032 | Feb 2032 |
| US 11,236,262 | In force Feb 2032 | Feb 2032 |
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 |
|---|---|---|---|
| Mar 8, 2017 Reel 41502, frame 910 | Frost, Jack G.; Matza, Stephen D.; Smith, Martha T. | United Laboratories International, LLC | Assignment of Assignor's 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
Sep 2032
Term ends Sep 8, 2032. Maintenance fees still fall due before then
Note
The 335 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 10,052,583, US 10,093,869, US 8,993,488, US 9,512,019, US 9,815,720.
Citations
15
later US patents cite this one
That is top 25% of utility patents granted in 2018 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.