Lapsed Mar 13, 2026 on the fee record · High confidence
20-year base term ends Dec 12, 2032
Second maintenance fee unpaid; grace period ended.
Held by Cirrus Logic, Inc.
Filed May 22, 2015 as application 14/720,712 · Granted Mar 13, 2018
Base term, 20 years from filing, plus 183 days of patent term adjustment (USPTO delay)
Today
Lapsed Mar 13, 2026
2012
2033
Clock starts
Dec 12, 2012
Dec 12, 2012
No longer in force
Mar 13, 2026
Mar 13, 2026
Granted
Mar 13, 2018
Mar 13, 2018
Term would have run to
Jun 13, 2033
Jun 13, 2033
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
183
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
4
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 Jun 13, 2033: its 20-year base term plus 183 days of term adjustment for prosecution delay. 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 12, 2012, when application 13/712,711, the earliest non-provisional in its chain, was filed (this one was filed May 22, 2015) | Dec 12, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +183 days, USPTO patent term adjustment record | Jun 13, 2033 | 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 | 1 of 3 maintenance fees paid | lapsed Mar 13, 2026 | High confidence |
| Computed term end | The steps above, in order | Mar 13, 2026 | High confidence |
This family
| US 9,042,867 | Lapsed on the fee record May 2023 | May 2023 |
| US 9,917,833 | this patent Mar 2026 | Mar 2026 |
| US 10,749,864 | Lapsed on the fee record Aug 2024 | Aug 2024 |
| US 11,545,155 | In force Aug 2033 | Aug 2033 |
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 27, 2015 Reel 36190, frame 421 | Agnitio, S.l. | Cirrus Logic International Semiconductor Ltd. | Assignment of Assignor's Interest |
| Nov 20, 2015 Reel 37151, frame 328 | Agnitio, S.l. | Cirrus Logic International Semiconductor Ltd. | Assignment of Assignor's Interest |
| Jan 23, 2018 Reel 44696, frame 880 | Cirrus Logic International Semiconductor Ltd. | Cirrus Logic, 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.
What's changing
Note
The 183 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
24
later US patents cite this one
That is top 25% of utility patents granted in 2018 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.