Lapsed Dec 12, 2025 on the fee record · Medium confidence
20-year base term ends Jun 10, 2030
Why Medium: A terminal disclaimer is on file (approved) with no resolved reference, so the term may end earlier.
Second maintenance fee unpaid; grace period ended.
Held by KCI USA, Inc.
Filed Mar 19, 2015 as application 14/663,203 · Granted Dec 12, 2017
Base term, 20 years from filing, plus 61 days of patent term adjustment (USPTO delay)
Today
Lapsed Dec 12, 2025
2010
2030
Clock starts
Jun 10, 2010
Jun 10, 2010
No longer in force
Dec 12, 2025
Dec 12, 2025
Granted
Dec 12, 2017
Dec 12, 2017
Term would have run to
Aug 10, 2030
Aug 10, 2030
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
61
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
1 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.
4
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 Aug 10, 2030: its 20-year base term plus 61 days of term adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 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 Jun 10, 2010, when application PCT/GB2010/001143, the earliest non-provisional in its chain, was filed (this one was filed Mar 19, 2015) | Jun 10, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +61 days, USPTO patent term adjustment record | Aug 10, 2030 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Dec 12, 2025 | High confidence |
| Computed term end | The steps above, in order | Dec 12, 2025 | Medium confidence |
This family
| US 8,992,509 | In force Dec 2030 | Dec 2030 |
| US 9,839,559 | this patent Dec 2025 | Dec 2025 |
| US 10,874,556 | Lapsed on the fee record Dec 2024 | Dec 2024 |
3 of 4 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 |
|---|---|---|---|
| May 27, 2015 Reel 35717, frame 945 | Lowing, Paul Howard | Systagenix Wound Management (US), Inc. | Assignment of Assignor's Interest |
| May 27, 2015 Reel 35718, frame 128 | Systagenix Wound Management (US), Inc.; KCI USA, Inc. | KCI USA, Inc. | Merger and Change of Name |
| Feb 17, 2016 Reel 37845, frame 497 | Kinetic Concepts, Inc.; KCI USA, Inc.; Acelity L.P. Inc.; Chiron Holdings, Inc.; Chiron Topco, Inc.; KCI Animal Health, LLC; KCI Holding Company, Inc.; KCI Homecare, Inc.; KCI Imports, Inc.; KCI International, Inc.; KCI Licensing, Inc.; KCI Properties Limited; Kci Real Holdings, L.l.c.; KCI Real Property Limited; KCI USA Real Holdings, L.L.C.; Lifecell Corporation; Technimotion, LLC | Wilmington Trust, National Association | Security 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 7, 2017 Reel 41650, frame 13 | KCI USA, Inc., as Grantor | Bank of America, N.A., as Collateral Agent | Security Agreement |
| Feb 8, 2017 Reel 41666, frame 320 | Wilmington Trust | KCI USA, Inc. | Release of Security Interest Reel/Frame 040098/0268 |
| Oct 11, 2019 Reel 50710, frame 955 | Bank Of America, N.a. | KCI USA, Inc. | Release of Security Interest |
| Nov 6, 2019 Reel 50945, frame 278 | Wilmington Trust, National Association | Kinetic Concepts, Inc.; KCI USA, Inc.; Acelity L.P. Inc.; Chiron Holdings, Inc.; Chiron Topco, Inc.; KCI Animal Health, LLC; KCI Holding Company, Inc.; KCI Homecare, Inc.; KCI Imports, Inc.; KCI International, Inc.; KCI Licensing, Inc.; KCI Properties Limited; Kci Real Holdings, L.l.c.; KCI Real Property Limited; KCI USA Real Holdings, L.L.C.; Technimotion, LLC | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | Kinetic Concepts, Inc. | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | KCI USA, Inc. | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | Acelity L.P. Inc. | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | Chiron Holdings, Inc. | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | Chiron Topco, Inc. | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | KCI Animal Health, LLC | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | KCI Holding Company, Inc. | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | KCI Homecare, Inc. | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | KCI Imports, Inc. | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | KCI International, Inc. | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | KCI Licensing, Inc. | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | KCI Properties Limited | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | Kci Real Holdings, L.l.c. | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | KCI Real Property Limited | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | KCI USA Real Holdings, L.L.C. | Release of Security Interest in Patents |
| Nov 6, 2019 reel/frame not recorded | Wilmington Trust, National Association | Technimotion, LLC | Release of Security Interest in Patents |
| 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 61 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Dec 12, 2025. We will not guess the cap.
Citations
1
later US patent cites this one
That is below the median 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.