Also listed on Xponent Photonics Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Mar 2, 2027 · High confidence
20-year base term ends Mar 2, 2027
Held by Huawei Technologies Co., Ltd.
Filed Mar 2, 2007 as application 11/681,352 · Granted Jun 9, 2009
Base term, 20 years from filing
Today
2007
2027
Clock starts
Mar 2, 2007
Mar 2, 2007
Term ends
Mar 2, 2027
Mar 2, 2027
Granted
Jun 9, 2009
Jun 9, 2009
base term
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.
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 is its 20-year base term, with no adjustment for 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 Mar 2, 2007, when this application, 11/681,352, was filed | Mar 2, 2027 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 2, 2027 | High confidence |
This family
| US 7,543,993 | this patent Mar 2027 | Mar 2027 |
| Application PCT/US2007/063245 | PCT application no patent term | no patent term |
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 |
|---|---|---|---|
| Apr 1, 2007 Reel 19098, frame 334 | Benzoni, Albert M.; Blauvelt, Henry A.; Byrd, Gerald C. | Xponent Photonics Inc. | Assignment of Assignor's Interest |
| Nov 14, 2007 Reel 20156, frame 470 | Xponent Photonics Inc. | Xponent (Assignment for Benefit of Creditors), LLC | Assignment of Assignor's Interest |
| Nov 14, 2007 Reel 20156, frame 485 | Xponent (Assignment for the Benefit of Credtors), LLC | Hoya Corporation USA | Assignment of Assignor's Interest |
| Jun 5, 2015 Reel 35841, frame 450 | Hoya Corporation USA | Hoya Corporation USA | Assignee Change of Address |
| Nov 16, 2015 Reel 37042, frame 814 | Hoya Corporation USA | Huawei Technologies Co., Ltd. | 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.
What's changing
Mar 2027
Term ends Mar 2, 2027. No further fees fall due before then
Citations
49
later US patents cite this one
That is top 25% of utility patents granted in 2009 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.