Term ended May 20, 2025 · High confidence
20-year base term ended May 20, 2025
USPTO later recorded it as expired for non-payment on Mar 23, 2026.
Held by Silicon Storage Technology, Inc.
Filed Aug 26, 2016 as application 15/249,306 · Granted Feb 13, 2018
Base term, 20 years from filing
Today
Term ended May 20, 2025
2005
2026
Clock starts
May 20, 2005
May 20, 2005
Term ended
May 20, 2025
May 20, 2025
Granted
Feb 13, 2018
Feb 13, 2018
base term
after the term ends
fee events
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.
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.
5
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. 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 May 20, 2005, when application 11/134,540, the earliest non-provisional in its chain, was filed (this one was filed Aug 26, 2016) | May 20, 2025 | 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 | 1 of 1 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Mar 23, 2026, after the term ended | no change | High confidence |
| Computed term end | The steps above, in order | May 20, 2025 | High confidence |
This family
| US 7,242,051 | Term ended Aug 2025 | Aug 2025 |
| US 7,808,839 | In force Dec 2026 | Dec 2026 |
| US 8,780,642 | Term ended Dec 2025 | Dec 2025 |
| US 9,449,693 | Term ended May 2025 | May 2025 |
| US 9,892,790 | this patent May 2025 | May 2025 |
The applications whose file history this site holds. The family may have others.
Assignments
The 40 most recent of 44 recorded documents are shown; the 4 earliest are not. 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 |
|---|---|---|---|
| May 30, 2020 Reel 53466, frame 11 | JPMorgan Chase Bank, N.A, as Administrative Agent | Microchip Technology Inc.; Silicon Storage Technology, Inc.; Atmel Corporation; Microsemi Corporation; Microsemi Storage Solutions, Inc. | Release of Security Interest |
| May 30, 2020 reel/frame not recorded | JPMorgan Chase Bank, N.A, as Administrative Agent | Microchip Technology Inc. | Release of Security Interest |
| May 30, 2020 reel/frame not recorded | JPMorgan Chase Bank, N.A, as Administrative Agent | Silicon Storage Technology, Inc. | Release of Security Interest |
| May 30, 2020 reel/frame not recorded | JPMorgan Chase Bank, N.A, as Administrative Agent | Atmel Corporation | Release of Security Interest |
| May 30, 2020 reel/frame not recorded | JPMorgan Chase Bank, N.A, as Administrative Agent | Microsemi Corporation | Release of Security Interest |
| May 30, 2020 reel/frame not recorded | JPMorgan Chase Bank, N.A, as Administrative Agent | Microsemi Storage Solutions, Inc. | Release of Security Interest |
| Jun 5, 2020 Reel 53468, frame 705 | Microchip Technology Inc.; Silicon Storage Technology, Inc.; Atmel Corporation; Microsemi Corporation; Microsemi Storage Solutions, Inc. | Wells Fargo Bank, National Association | Security Interest |
| Dec 24, 2020 Reel 55671, frame 612 | Microchip Technology Incorporated; Silicon Storage Technology, Inc.; Atmel Corporation; Microsemi Corporation; Microsemi Storage Solutions, Inc. | Wells Fargo Bank, National Association, as Collateral Agent | Security Interest |
| Jun 4, 2021 Reel 57935, frame 474 | Microchip Technology Incorporated; Silicon Storage Technology, Inc.; Atmel Corporation; Microsemi Corporation; Microsemi Storage Solutions, Inc. | Wells Fargo Bank, National Association, as Notes Collateral Agent | Security Interest |
| Feb 25, 2022 Reel 59333, frame 222 | JPMorgan Chase Bank, N.A., as Administrative Agent | Microchip Technology Incorporated; Silicon Storage Technology, Inc.; Atmel Corporation; Microsemi Corporation; Microsemi Storage Solutions, Inc. | Release of Security Interest |
| Feb 25, 2022 reel/frame not recorded | JPMorgan Chase Bank, N.A., as Administrative Agent | Microchip Technology Incorporated | Release of Security Interest |
| Feb 25, 2022 reel/frame not recorded | JPMorgan Chase Bank, N.A., as Administrative Agent | Silicon Storage Technology, Inc. | Release of Security Interest |
| Feb 25, 2022 reel/frame not recorded | JPMorgan Chase Bank, N.A., as Administrative Agent | Atmel Corporation | Release of Security Interest |
| Feb 25, 2022 reel/frame not recorded | JPMorgan Chase Bank, N.A., as Administrative Agent | Microsemi Corporation | Release of Security Interest |
| Feb 25, 2022 reel/frame not recorded | JPMorgan Chase Bank, N.A., as Administrative Agent | Microsemi Storage Solutions, Inc. | Release of Security Interest |
| Feb 28, 2022 Reel 59687, frame 344 | JPMorgan Chase Bank, N.A., as Administrative Agent | Silicon Storage Technology, Inc. | Release of Security Interest |
| Mar 9, 2022 Reel 59358, frame 1 | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microchip Technology Incorporated; Silicon Storage Technology, Inc.; Atmel Corporation; Microsemi Corporation; Microsemi Storage Solutions, Inc. | Release of Security Interest |
| Mar 9, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microchip Technology Incorporated | Release of Security Interest |
| Mar 9, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Silicon Storage Technology, Inc. | Release of Security Interest |
| Mar 9, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Atmel Corporation | Release of Security Interest |
| Mar 9, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microsemi Corporation | Release of Security Interest |
| Mar 9, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microsemi Storage Solutions, Inc. | Release of Security Interest |
| Mar 10, 2022 Reel 59863, frame 400 | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microchip Technology Incorporated; Silicon Storage Technology, Inc.; Atmel Corporation; Microsemi Corporation; Microsemi Storage Solutions, Inc. | Release of Security Interest |
| Mar 10, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microchip Technology Incorporated | Release of Security Interest |
| Mar 10, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Silicon Storage Technology, Inc. | Release of Security Interest |
| Mar 10, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Atmel Corporation | Release of Security Interest |
| Mar 10, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microsemi Corporation | Release of Security Interest |
| Mar 10, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microsemi Storage Solutions, Inc. | Release of Security Interest |
| Mar 11, 2022 Reel 59363, frame 1 | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microchip Technology Incorporated; Silicon Storage Technology, Inc.; Atmel Corporation; Microsemi Corporation; Microsemi Storage Solutions, Inc. | Release of Security Interest |
| Mar 11, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microchip Technology Incorporated | Release of Security Interest |
| Mar 11, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Silicon Storage Technology, Inc. | Release of Security Interest |
| Mar 11, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Atmel Corporation | Release of Security Interest |
| Mar 11, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microsemi Corporation | Release of Security Interest |
| Mar 11, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microsemi Storage Solutions, Inc. | Release of Security Interest |
| Mar 14, 2022 Reel 60894, frame 437 | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microchip Technology Incorporated; Silicon Storage Technology, Inc.; Atmel Corporation; Microsemi Corporation; Microsemi Storage Solutions, Inc. | Release of Security Interest |
| Mar 14, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microchip Technology Incorporated | Release of Security Interest |
| Mar 14, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Silicon Storage Technology, Inc. | Release of Security Interest |
| Mar 14, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Atmel Corporation | Release of Security Interest |
| Mar 14, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microsemi Corporation | Release of Security Interest |
| Mar 14, 2022 reel/frame not recorded | Wells Fargo Bank, National Association, as Notes Collateral Agent | Microsemi Storage Solutions, Inc. | Release of Security 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.
Citations
1
later US patent cites this one
That is below the median 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.