Also listed on NXP USA, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Dec 7, 2026 · High confidence
20-year base term ended Oct 29, 2023
Held by Allegro Microsystems, LLC
Filed May 24, 2005 as application 10/536,271 · Granted Jul 26, 2011
Base term plus 1135 days of patent term adjustment (USPTO delay)
Today
2003
2026
Clock starts
Oct 29, 2003
Oct 29, 2003
Term ends
Dec 7, 2026
Dec 7, 2026
Granted
Jul 26, 2011
Jul 26, 2011
base term
patent term adjustment
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
1,135
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
2
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 runs 1135 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Oct 29, 2003, when application PCT/IB2003/004868, the earliest non-provisional in its chain, was filed (this one was filed May 24, 2005) | Oct 29, 2023 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1135 days, USPTO patent term adjustment record | Dec 7, 2026 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 7, 2026 | High confidence |
This family
| US 7,986,548 | this patent Dec 2026 | Dec 2026 |
1 of 2 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 |
|---|---|---|---|
| May 24, 2005 Reel 16993, frame 92 | Ditewig, Anthonie; Cuppens, Roger | Koninklijke Philips Electronics N.V. | Assignment of Assignor's Interest |
| Jun 13, 2008 Reel 21085, frame 959 | Koninklijke Philips Electronics N.V. | NXP B.V. | Assignment of Assignor's Interest |
| Nov 14, 2011 Reel 27222, frame 49 | Crocus Technology, Inc. | NXP B.V. | Lien |
| Oct 8, 2014 Reel 33917, frame 259 | Crocus Technology, Inc. | Kreos Capital IV (Luxembourg) SARL | Security Interest |
| Jun 29, 2015 Reel 36031, frame 327 | Crocus Technology, Inc. | Kreos Capital IV (Luxembourg) SARL | Security Interest |
| Apr 9, 2018 Reel 45871, frame 622 | Kreos Capital IV (Luxembourg) SARL | Crocus Technology, Inc. | Release of Security Interest |
| Apr 13, 2018 Reel 45938, frame 810 | Crocus Technology, Inc. | LLC "Sberbank Investments" | Security Interest |
| Aug 30, 2023 Reel 64783, frame 420 | LLC "Sberbank Investments" | Crocus Technology, Inc. | Release of Security Interest |
| Oct 25, 2023 Reel 65334, frame 488 | NXP B.V. | Crocus Technology Inc. | Release of Security Interest |
| Oct 25, 2023 Reel 65345, frame 304 | Crocus Technology Inc. | NXP B.V. | Corrective Assignment to Correct the the Spelling of the Conveying Party Name and Address on the Document. Previously Recorded at Reel: 02722 Frame: 0049. Assignor(S) Hereby Confirms the Assignment. |
| Oct 26, 2023 Reel 65363, frame 587 | NXP B.V. | Crocus Technology Inc. | Assignment of Assignor's Interest |
| Dec 28, 2023 Reel 66157, frame 629 | Crocus Technology Inc. | Crocus Technology S.A. | Assignment of Assignor's Interest |
| Jan 18, 2024 Reel 66350, frame 669 | Crocus Technology S.A. | Allegro Microsystems, LLC | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Dec 2026
Term ends Dec 7, 2026. No further fees fall due before then
Note
The 1135 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2011 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.