Lapsed May 12, 2023 on the fee record · Medium confidence
20-year base term ends Apr 9, 2032
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 Licensing, Inc.
Filed Apr 9, 2012 as application 13/442,076 · Granted May 12, 2015
Base term, 20 years from filing, plus 652 days of patent term adjustment (USPTO delay)
Today
Lapsed May 12, 2023
2012
2034
Clock starts
Apr 9, 2012
Apr 9, 2012
No longer in force
May 12, 2023
May 12, 2023
Granted
May 12, 2015
May 12, 2015
Term would have run to
Jan 21, 2034
Jan 21, 2034
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
652
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.
18
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 Jan 21, 2034: its 20-year base term plus 652 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 Apr 9, 2012, when this application, 13/442,076, was filed | Apr 9, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +652 days, USPTO patent term adjustment record | Jan 21, 2034 | 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 May 12, 2023 | High confidence |
| Computed term end | The steps above, in order | May 12, 2023 | Medium confidence |
This family
| US 8,604,265 | In force Jan 2032 | Jan 2032 |
| Application PCT/US2011/032577 | PCT application no patent term | no patent term |
| US 9,028,459 | this patent May 2023 | May 2023 |
| Application PCT/US2012/032806 | PCT application no patent term | no patent term |
| Application PCT/US2012/032789 | PCT application no patent term | no patent term |
| Application PCT/US2012/032795 | PCT application no patent term | no patent term |
| Application PCT/US2012/032799 | PCT application no patent term | no patent term |
| US 9,314,377 | In force Oct 2033 | Oct 2033 |
8 of 18 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 |
|---|---|---|---|
| Apr 19, 2012 Reel 28075, frame 439 | Coulthard, Richard Daniel John; Locke, Christopher Brian | 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.
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 652 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 May 12, 2023. We will not guess the cap.
Citations
61
later US patents cite this one
That is top 10% of utility patents granted in 2015 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.