Collateral for a security interest recorded Feb 9, 2023 (HCR Collateral Management, LLC).
Term ends Dec 4, 2026 · High confidence
20-year base term ends Dec 4, 2026
Held by Liquidia Technologies, Inc.
Filed May 25, 2017 as application 15/605,746 · Granted Jul 21, 2020
Base term plus 459 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2006
2026
Clock starts
Dec 4, 2006
Dec 4, 2006
Term ends
Dec 4, 2026
Dec 4, 2026
Granted
Jul 21, 2020
Jul 21, 2020
base term
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
459
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,128,393, US 8,439,666, US 8,662,878.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
7
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 459 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 1 of 1 maintenance fees is paid so far. 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 Dec 4, 2006, when application 11/633,763, the earliest non-provisional in its chain, was filed (this one was filed May 25, 2017) | Dec 4, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +459 days, USPTO patent term adjustment record | Mar 7, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,128,393, US 8,439,666, US 8,662,878) | capped to Dec 4, 2026 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 4, 2026 | High confidence |
This family
| US 8,128,393 | In force Jun 2028 | Jun 2028 |
| US 8,439,666 | In force Dec 2026 | Dec 2026 |
| US 8,662,878 | In force Dec 2026 | Dec 2026 |
| US 8,945,441 | In force Dec 2026 | Dec 2026 |
| US 9,340,001 | In force Dec 2026 | Dec 2026 |
| US 9,662,809 | In force Dec 2026 | Dec 2026 |
| US 10,717,209 | this patent Dec 2026 | Dec 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 |
|---|---|---|---|
| Jan 3, 2018 Reel 44520, frame 868 | Rolland, Jason P.; Maynor, Benjamin; Henn, Robert L. | Liquidia Technologies, Inc. | Assignment of Assignor's Interest |
| Feb 9, 2023 Reel 62643, frame 791 | Liquidia Technologies, Inc. | HCR Collateral Management, LLC | Security Interest |
| May 11, 2023 Reel 63627, frame 307 | HCR Collateral Management, LLC, as Retiring Subordinated Lender | Healthcare Royalty Partners IV, L.P., as Successor Subordinated Lender | Assignment of IP Security Agreement Recorded at Reel/Frame 062643/0791 |
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
Dec 2026
Term ends Dec 4, 2026. No further fees fall due before then
Note
The 459 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,128,393, US 8,439,666, US 8,662,878.
Citations
3
later US patents cite this one
That is above the median of utility patents granted in 2020 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.