Collateral for a security interest recorded Jul 18, 2022 (Goldman Sachs Middle Market Lending Corp. II).
Term ended Mar 11, 2026 · High confidence
20-year base term ended Mar 11, 2025
Held by Apteryx, LLC
Filed Dec 16, 2009 as application 12/639,143 · Granted Sep 11, 2012
Base term plus 365 days of patent term adjustment (USPTO delay)
Today
Term ended Mar 11, 2026
2005
2026
Clock starts
Mar 11, 2005
Mar 11, 2005
Term ended
Mar 11, 2026
Mar 11, 2026
Granted
Sep 11, 2012
Sep 11, 2012
base term
patent term adjustment
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
365
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
2
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 365 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Mar 11, 2005, when application 11/078,810, the earliest non-provisional in its chain, was filed (this one was filed Dec 16, 2009) | Mar 11, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +365 days, USPTO patent term adjustment record | Mar 11, 2026 | 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 | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Mar 11, 2026 | High confidence |
This family
| US 8,447,378 | In force Jun 2032 | Jun 2032 |
| US 8,265,729 | this patent Mar 2026 | Mar 2026 |
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 |
|---|---|---|---|
| Feb 1, 2010 Reel 23879, frame 154 | Crucs, Kevin M. | Apteryx, Inc. | Assignment of Assignor's Interest |
| May 12, 2020 Reel 52639, frame 824 | Apteryx, Inc. | National Bank of Canada | Security Interest |
| Sep 24, 2020 Reel 53872, frame 602 | National Bank of Canada | Apteryx, Inc. | Release of Security Interest |
| Mar 3, 2022 Reel 59317, frame 626 | Apteryx, LLC | Saratoga Investment Corp. SBIC LP, as Administrative Agent | Notice of Grant of Security Interest in Patents |
| Mar 24, 2022 Reel 59390, frame 915 | Apteryx, Inc. | Apteryx, LLC | Change of Name |
| Jul 18, 2022 Reel 60531, frame 750 | Apteryx, LLC; PDDS Holdco, Inc. | Goldman Sachs Middle Market Lending Corp. II, as Collateral Agent | Security Interest |
| Jul 19, 2022 Reel 60550, frame 26 | Saratoga Investment Corp. SBIC LP, as Administrative Agent | Apteryx, LLC | Release of Security Interest |
| Sep 30, 2025 Reel 72990, frame 80 | Goldman Sachs Middle Market Lending Corp. II, as Resigning Collateral Agent | Goldman Sachs Private Credit Corp., as Successor Collateral Agent | Notice of Assignment of Security Interest in Patents Recorded at RF 060531-0750 |
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
The 365 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
3
later US patents cite this one
That is below the median of utility patents granted in 2012 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.