Term ends Nov 12, 2029 · High confidence
20-year base term ends Sep 15, 2031
Held by Mars, Incorporated
Filed Sep 15, 2011 as application 13/233,794 · Granted Nov 19, 2013
Base term, 20 years from filing · capped by a resolved terminal disclaimer
Today
2011
2031
Clock starts
Sep 15, 2011
Sep 15, 2011
Term ends
Nov 12, 2029
Nov 12, 2029
Granted
Nov 19, 2013
Nov 19, 2013
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
None
Term adjustment
No prosecution delay on this record.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,300,993, US 8,331,751.
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.
7
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Sep 15, 2011, when this application, 13/233,794, was filed | Sep 15, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,300,993, US 8,331,751) | capped to Nov 12, 2029 | 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 | Nov 12, 2029 | High confidence |
This family
| US 8,300,993 | In force Nov 2029 | Nov 2029 |
| US 8,331,751 | In force Nov 2029 | Nov 2029 |
| US 8,586,347 | this patent Nov 2029 | Nov 2029 |
| US 8,606,066 | Lapsed on the fee record Dec 2025 | Dec 2025 |
| US 9,212,995 | In force Nov 2029 | Nov 2029 |
| US 9,658,222 | In force Nov 2029 | Nov 2029 |
6 of 7 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 |
|---|---|---|---|
| Nov 30, 2011 Reel 27298, frame 615 | Lochhead, Michael J.; Ives, Jeffrey; Todorof, Kathryn; Greef, Charles; Delaney, Marie J.; Moll, Kevin D.; Vogel, Kurt R.; Rowley, Keagan B.; Woodruff, Evelyn S.; Dunn, John S.; Myatt, Christopher J.; Nieuwlandt, Daniel T. | Mbio Diagnostics, Inc. | Assignment of Assignor's Interest |
| Feb 2, 2021 Reel 55111, frame 89 | Mbio Diagnostics, Inc. Dba Lightdeck Diagnostics | Heska Corporation | Security Interest |
| May 19, 2025 Reel 71338, frame 783 | Antech Diagnostics, Inc. | Mars, Incorporated | Assignment of Assignor's Interest |
| May 19, 2025 Reel 71338, frame 695 | Mbio Diagnostics, Inc. | Heska Corporation | Merger |
| May 19, 2025 Reel 71338, frame 716 | Heska Corporation | Antech Diagnostics, 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.
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Alerts on its grants, lapses and transfers.
What's changing
Nov 2029
Term ends Nov 12, 2029. No further fees fall due before then
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,300,993, US 8,331,751.
Citations
177
later US patents cite this one
That is top 5% 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.