Lapsed Mar 25, 2026 on the fee record · High confidence
20-year base term ends Oct 15, 2027
Third maintenance fee unpaid; grace period ended.
Held by KCI Licensing, Inc.
Filed Aug 9, 2011 as application 13/205,807 · Granted Mar 25, 2014
Base term, 20 years from filing, plus 203 days of patent term adjustment (USPTO delay)
Today
Lapsed Mar 25, 2026
2007
2028
Clock starts
Oct 15, 2007
Oct 15, 2007
No longer in force
Mar 25, 2026
Mar 25, 2026
Granted
Mar 25, 2014
Mar 25, 2014
Term would have run to
May 5, 2028
May 5, 2028
base term
patent term adjustment
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
203
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 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.
11
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to May 5, 2028: its 20-year base term plus 203 days of term adjustment for prosecution delay. 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 Oct 15, 2007, when application 11/974,534, the earliest non-provisional in its chain, was filed (this one was filed Aug 9, 2011) | Oct 15, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +203 days, USPTO patent term adjustment record | May 5, 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 3 maintenance fees paid | lapsed Mar 25, 2026 | High confidence |
| Computed term end | The steps above, in order | Mar 25, 2026 | High confidence |
This family
| US 8,007,257 | Lapsed on the fee record Aug 2023 | Aug 2023 |
| US 8,535,283 | Lapsed on the fee record Sep 2025 | Sep 2025 |
| US 8,287,507 | In force May 2029 | May 2029 |
| US 8,679,079 | this patent Mar 2026 | Mar 2026 |
| US 8,986,267 | In force no later than Feb 2028 | no later than Feb 2028 |
| US 9,028,458 | In force Feb 2028 | Feb 2028 |
| US 9,561,312 | Lapsed on the fee record Feb 2025 | Feb 2025 |
| US 9,925,312 | Lapsed on the fee record Mar 2026 | Mar 2026 |
8 of 11 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 |
|---|---|---|---|
| Aug 9, 2011 Reel 26719, frame 778 | Heaton, Keith Patrick; Hardman, Ian | KCI Licensing, Inc. | Assignment of Assignor's Interest |
| Sep 21, 2016 Reel 40098, frame 268 | KCI USA, Inc.; Lifecell Corporation; KCI Licensing, Inc. | Wilmington Trust, National Association, as Collateral Agent | Second Lien Security Agreement |
| Oct 7, 2016 Reel 40291, frame 237 | KCI USA, Inc.; Lifecell Corporation; KCI Licensing, Inc. | Wilmington Trust, National Association, as Collateral Agent | Limited Third Lien Intellectual Property Security Agreement |
| Feb 8, 2017 Reel 41666, frame 320 | Wilmington Trust | KCI USA, Inc. | Release of Security Interest Reel/Frame 040098/0268 |
| Nov 7, 2019 Reel 50966, frame 547 | Wilmington Trust, National Association | KCI USA, Inc.; KCI Licensing, Inc. | Release of Security Interest in Patents |
| Nov 7, 2019 reel/frame not recorded | Wilmington Trust, National Association | KCI USA, Inc. | Release of Security Interest in Patents |
| Nov 7, 2019 reel/frame not recorded | Wilmington Trust, National Association | KCI Licensing, Inc. | Release of Security Interest in Patents |
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
Note
The 203 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
123
later US patents cite this one
That is top 5% of utility patents granted in 2014 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.