Also listed on Firefly IP Co., LLC, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Apr 24, 2040 · High confidence
20-year base term ends Apr 24, 2040
Held by Firefly Aerospace Inc.
Filed Apr 24, 2020 as application 16/857,609 · Granted Dec 19, 2023
Base term, 20 years from filing
Today
2020
2040
Clock starts
Apr 24, 2020
Apr 24, 2020
Term ends
Apr 24, 2040
Apr 24, 2040
Granted
Dec 19, 2023
Dec 19, 2023
base term
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. 0 of 3 maintenance fees are 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 Apr 24, 2020, when this application, 16/857,609, was filed | Apr 24, 2040 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | 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 | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 24, 2040 | High confidence |
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 24, 2020 Reel 52487, frame 845 | Borissov, Anatoli Alimpievich; Markusic, Thomas Edward | Firefly Aerospace Inc. | Assignment of Assignor's Interest |
| Jul 25, 2023 Reel 64370, frame 925 | Firefly Aerospace Inc.; Firefly Space Transport Services, LLC; Firefly Research, Inc.; Spaceflight, Inc. | Firefly IP Co., LLC | Assignment of Assignor's Interest |
| Jul 25, 2023 Reel 64371, frame 67 | Firefly IP Co., LLC | Firefly Aerospace Inc. | License |
| Jul 25, 2023 Reel 64371, frame 825 | Firefly Aerospace Inc.; Firefly Space Transport Services, LLC; Firefly Research, Inc.; Firefly IP Co., LLC; Firefly IP Holdings, LLC; Spaceflight, Inc. | U.S. Bank Trust Company, National Association, as Collateral Agent | Security Interest |
| Aug 8, 2025 reel/frame not recorded | U.S. Bank Trust Company, National Association, as Collateral Agent | Firefly Aerospace Inc. | Release of Security Interest |
| Aug 8, 2025 reel/frame not recorded | U.S. Bank Trust Company, National Association, as Collateral Agent | Firefly Space Transport Services, LLC | Release of Security Interest |
| Aug 8, 2025 reel/frame not recorded | U.S. Bank Trust Company, National Association, as Collateral Agent | Firefly Research, Inc. | Release of Security Interest |
| Aug 8, 2025 reel/frame not recorded | U.S. Bank Trust Company, National Association, as Collateral Agent | Firefly IP Co., LLC | Release of Security Interest |
| Aug 8, 2025 reel/frame not recorded | U.S. Bank Trust Company, National Association, as Collateral Agent | Firefly IP Holdings, LLC | Release of Security Interest |
| Aug 8, 2025 reel/frame not recorded | U.S. Bank Trust Company, National Association, as Collateral Agent | Spaceflight, Inc. | Release of Security Interest |
| Aug 8, 2025 Reel 72343, frame 126 | Firefly Aerospace Inc. | Wells Fargo Bank, National Association, as Administrative Agent | Security Agreement |
| Aug 8, 2025 Reel 71975, frame 832 | U.S. Bank Trust Company, National Association, as Collateral Agent | Firefly Aerospace Inc.; Firefly Space Transport Services, LLC; Firefly Research, Inc.; Firefly IP Co., LLC; Firefly IP Holdings, LLC; Spaceflight, Inc. | Release of Security Interest |
| Aug 11, 2025 Reel 71987, frame 853 | Firefly IP Holdings, LLC; Firefly IP Co., LLC | Firefly Aerospace Inc. | Merger |
| Aug 11, 2025 Reel 72412, frame 838 | Firefly IP Co., LLC | Firefly Aerospace Inc. | Termination of Intellectual Property License Agreement Release of R/F 64371/0067 |
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
Apr 2040
Term ends Apr 24, 2040. Maintenance fees still fall due before then
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2023 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.