Term ends May 8, 2038 · Low confidence
20-year base term ends May 8, 2038
Held by Rectorseal, LLC
Filed Nov 18, 2021 as application 17/530,141 · Granted May 20, 2025
Base term, 20 years from filing
Today
2018
2038
Clock starts
May 8, 2018
May 8, 2018
Term ends
May 8, 2038
May 8, 2038
Granted
May 20, 2025
May 20, 2025
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 11,183,338, to May 8, 2038. The term already ends on or before that date, so the cap shortened nothing.
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.
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 0 of 3 maintenance fees are paid so far. Confidence: Low. 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 May 8, 2018, when application 15/973,876, the earliest non-provisional in its chain, was filed (this one was filed Nov 18, 2021); a parent in its chain could not be resolved (the next row) | May 8, 2038 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,183,338) | resolves to May 8, 2038, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Further caveats on record | The record names parents not resolved: 15973876 | Low confidence overall | Low confidence |
| Computed term end | The steps above, in order | May 8, 2038 | Low confidence |
This family
| US 11,183,338 | In force May 2038 | May 2038 |
| US 11,195,663 | In force May 2038 | May 2038 |
| US 12,308,179 | this patent May 2038 | May 2038 |
| US 12,580,132 | In force May 2038 | May 2038 |
| US 12,272,503 | In force May 2038 | May 2038 |
| Application 19/030,078 | Pending not computed | not computed |
| Application 19/030,699 | Pending 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 |
|---|---|---|---|
| Jul 7, 2022 Reel 60613, frame 939 | American Radionic Company, Inc. | Amrad Manufacturing, LLC | Assignment of Assignor's Interest |
| Jul 7, 2022 Reel 60614, frame 240 | Stockman, Robert M. | American Radionic Company, Inc. | Assignment of Assignor's Interest |
| May 13, 2025 Reel 71738, frame 759 | Amrad Manufacturing, LLC | Hvac South, LLC | Confirmatory Assignment |
| Oct 2, 2025 Reel 73080, frame 923 | Amrad Manufacturing, LLC | Hvac South, LLC | Corrective Assignment to Correct the Application Numbers 15969608 to 15989608 and 16161205 to 16171205 Previously Recorded on Reel 71738 Frame 759. Assignor(S) Hereby Confirms the Confirmatory Assignment. |
| Nov 6, 2025 Reel 73482, frame 908 | Hvac South, LLC | Jpmorgan Chase Bank, N.a. | Security Interest |
| Jun 30, 2026 Reel 75132, frame 483 | Hvac South, LLC | Rectorseal, LLC | Merger |
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
May 2038
Term ends May 8, 2038. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 11,183,338, ends no earlier than this term, so it caps nothing.
Citations
30
later US patents cite this one
Fewer than half of the utility patents granted in 2025 in our data have been cited yet, so we show the count and do not rank on it.
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.