Lapsed Jan 3, 2025 on the fee record · High confidence
20-year base term ends Mar 31, 2034
Second maintenance fee unpaid; grace period ended.
Filed Sep 19, 2014 as application 14/491,294 · Granted Jan 3, 2017
Base term, 20 years from filing
Today
Lapsed Jan 3, 2025
2014
2034
Clock starts
Mar 31, 2014
Mar 31, 2014
No longer in force
Jan 3, 2025
Jan 3, 2025
Granted
Jan 3, 2017
Jan 3, 2017
Term would have run to
Mar 31, 2034
Mar 31, 2034
base term
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,404,501, to Mar 31, 2034. The term already ends on or before that date, so the cap shortened nothing.
1 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.
15
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Mar 31, 2034: 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. 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 31, 2014, when application 29/486,504, the earliest non-provisional in its chain, was filed (this one was filed Sep 19, 2014) | Mar 31, 2034 | 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 | Disclaimer resolved from the filed document (refs US 9,404,501) | resolves to Mar 31, 2034, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Jan 3, 2025 | High confidence |
| Computed term end | The steps above, in order | Jan 3, 2025 | High confidence |
This family
| US D741,815 | In force Oct 2029 | Oct 2029 |
| US 9,404,501 | Lapsed on the fee record Aug 2024 | Aug 2024 |
| US 9,523,366 | Lapsed on the fee record Dec 2024 | Dec 2024 |
| US 9,534,606 | this patent Jan 2025 | Jan 2025 |
| US 9,528,522 | Lapsed on the fee record Dec 2024 | Dec 2024 |
| US 9,528,520 | Lapsed on the fee record Dec 2024 | Dec 2024 |
| US 9,528,873 | Lapsed on the fee record Dec 2024 | Dec 2024 |
| US 9,528,523 | Lapsed on the fee record Dec 2024 | Dec 2024 |
8 of 15 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Jun 9, 2015 Reel 35809, frame 899 | Cummings, Eugene M | Beacon Holdings, LLC | Assignment of Assignor's Interest |
| Jul 13, 2015 Reel 36072, frame 899 | Beacon Holdings, LLC | Beacon Technical Systems, LLC | Assignment of Assignor's Interest |
| Jun 4, 2018 Reel 47231, frame 253 | Schweitzer Engineering Laboratories, Inc. | Citibank, N.A., as Administrative Agent | Notice of Grant of Security Interest in Patents |
| Nov 16, 2020 Reel 54373, frame 806 | Beacon Technical Systems, LLC | Schweitzer Engineering Laboratories, Inc. | Assignment of Assignor's Interest |
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.
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Alerts on its grants, lapses and transfers.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,404,501, ends no earlier than this term, so it caps nothing.
Citations
29
later US patents cite this one
That is top 25% of utility patents granted in 2017 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.