Also listed on Emsystems LLC, an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded May 1, 2025 (CCP Agency, LLC).
Term ends no later than Apr 13, 2029 · Medium confidence
20-year base term ended Sep 14, 2025
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by Ares Capital Corporation
Filed Aug 27, 2007 as application 11/895,705 · Granted Apr 23, 2013
Base term plus 1307 days of patent term adjustment (USPTO delay)
Today
2005
2029
Clock starts
Sep 14, 2005
Sep 14, 2005
Ends no later than
Apr 13, 2029
Apr 13, 2029
Granted
Apr 23, 2013
Apr 23, 2013
base term
patent term adjustment
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
1,307
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.
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.
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 1307 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees are recorded paid; no more fees are due. 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 Sep 14, 2005, when application 11/226,875, the earliest non-provisional in its chain, was filed (this one was filed Aug 27, 2007) | Sep 14, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1307 days, USPTO patent term adjustment record | Apr 13, 2029 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Apr 13, 2029 | Medium confidence |
This family
| Application 11/226,875 | Abandoned not computed | not computed |
| Application 11/506,850 | Abandoned not computed | not computed |
| Application 11/728,357 | Abandoned not computed | not computed |
| US 8,428,961 | this patent no later than Apr 2029 | no later than Apr 2029 |
| Application 12/243,860 | Abandoned not computed | not computed |
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 10, 2009 Reel 22534, frame 98 | Greischar, Patrick J.; Hedgcock, Robert; Schweitzer, Elaine; Colwell, David R.; Barthell, Edward; Felton, Chris | Emsystem, LLC | Assignment of Assignor's Interest |
| Dec 29, 2009 Reel 23712, frame 141 | Emsystems, LLC | Kapi Mezzanine, L.p. | Security Agreement |
| Mar 22, 2010 Reel 24116, frame 585 | Emsystem LLC | Emsystems LLC | Certificate of Conversion and Certificate of Name Change |
| Apr 8, 2010 Reel 24204, frame 694 | Greischar, Patrick J.; Barthell, Edward; Hedgcock, Robert; Schweitzer, Elaine; Colwell, David R.; Felton, Chris | Emsystems LLC | Assignment of Assignor's Interest |
| Apr 26, 2010 Reel 24290, frame 598 | Kapi Mezzanine, L.p. | Emsystems LLC | Release of Security Interest Recorded at Reel/Frame 023712/0141 |
| Apr 26, 2010 Reel 24290, frame 896 | Emsystems LLC | GE Business Financial Services Inc., Formerly Known as Merrill Lynch Business Financial Services Inc., as Administrative Agent | Security Agreement |
| Apr 27, 2010 Reel 24296, frame 274 | Emsystems LLC | Mcg Capital Corporation, As Administrative Agent | Security Agreement |
| May 7, 2010 Reel 24354, frame 494 | Colwell, David R.; Felton, Chris; Greischar, Patrick J.; Schweitzer, Elaine; Hedgcock, Robert; Barthell, Edward | Emsystem, LLC | Nunc Pro Tunc Assignment |
| Aug 23, 2010 Reel 24874, frame 1 | Emsystems LLC | General Electric Capital Corporation | Security Agreement |
| Aug 23, 2010 Reel 24874, frame 465 | GE Business Financial Services Inc. | Emsystems LLC | Patent Release and Reassignment |
| Aug 23, 2010 Reel 24874, frame 542 | MCG Capital Corporation | Emsystems LLC | Patent Release and Reassignment |
| Mar 17, 2011 Reel 25970, frame 180 | Emsystems LLC | General Electric Capital Corporation, as Administrative Agent | Security Agreement |
| Mar 28, 2011 Reel 26034, frame 671 | General Electric Capital Corporation, as Administrative Agent | Emsystems LLC | Release of Security Interest |
| Dec 27, 2012 Reel 29548, frame 483 | General Electric Capital Corporation, as Administrative Agent | Emsystems LLC | Release by Secured Party of Reel/Frame 025970/0180 |
| Dec 27, 2012 Reel 29548, frame 492 | Emsystems LLC | General Electric Capital Corporation, as Administrative Agent | Security Agreement |
| Dec 27, 2012 Reel 29548, frame 702 | Emsystems LLC | Ares Capital Corporation, As Administrative Agent | Patent Security Agreement |
| Sep 26, 2017 Reel 43702, frame 835 | General Electric Company, as Successor in Interest by Merger to General Electric Capital Corporation | Ares Capital Corporation | Assignment of Assignor's Interest |
| May 8, 2018 Reel 46106, frame 644 | Ares Capital Corporation, As Administrative Agent | Intermedix Office Based, LLC; Emsystems LLC | Notice of Release of Security Interest in Patents (First Lien) |
| May 8, 2018 Reel 46106, frame 685 | Ares Capital Corporation, As Administrative Agent | Intermedix Office Based, LLC; Emsystems LLC | Notice of Release of Security Interest in Patents (Second Lien) |
| May 8, 2018 reel/frame not recorded | Ares Capital Corporation, As Administrative Agent | Intermedix Office Based, LLC | Notice of Release of Security Interest in Patents (First Lien) |
| May 8, 2018 reel/frame not recorded | Ares Capital Corporation, As Administrative Agent | Emsystems LLC | Notice of Release of Security Interest in Patents (First Lien) |
| May 8, 2018 reel/frame not recorded | Ares Capital Corporation, As Administrative Agent | Intermedix Office Based, LLC | Notice of Release of Security Interest in Patents (Second Lien) |
| May 8, 2018 reel/frame not recorded | Ares Capital Corporation, As Administrative Agent | Emsystems LLC | Notice of Release of Security Interest in Patents (Second Lien) |
| Aug 1, 2018 Reel 46527, frame 422 | Emsystems LLC | Capital One, National Association, as Administrative Agent | Security Interest |
| Jul 23, 2020 Reel 53291, frame 367 | Capital One, National Association | Emsystems LLC | Release of Security Interest |
| Oct 22, 2020 Reel 54145, frame 38 | Emsystems, LLC | Golub Capital LLC | Security Interest |
| May 1, 2025 Reel 71151, frame 91 | Emsystems LLC | CCP Agency, LLC, as Administrative Agent | Patent Security Agreement |
| May 2, 2025 Reel 71162, frame 55 | Golub Capital LLC | Emsystems LLC | Release of Security Interest in Patents (Reel/Frame 054145/0038) |
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.
What's changing
Apr 2029
Term ends no later than Apr 13, 2029. No further fees fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 1307 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 Apr 13, 2029. We will not guess the cap.
Citations
19
later US patents cite this one
That is above the median 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.