Term ends May 21, 2031 · High confidence
20-year base term ends Feb 12, 2029
Held by PTX Trimble LLC
Filed Feb 12, 2009 as application 12/370,346 · Granted Apr 23, 2013
Base term plus 828 days of patent term adjustment (USPTO delay)
Today
2009
2031
Clock starts
Feb 12, 2009
Feb 12, 2009
Term ends
May 21, 2031
May 21, 2031
Granted
Apr 23, 2013
Apr 23, 2013
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
828
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.
11
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 828 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 Feb 12, 2009, when this application, 12/370,346, was filed | Feb 12, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +828 days, USPTO patent term adjustment record | May 21, 2031 | 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 | May 21, 2031 | High confidence |
This family
| Application PCT/US2008/075626 | PCT application no patent term | no patent term |
| US 7,909,239 | In force Sep 2029 | Sep 2029 |
| US 8,428,773 | this patent May 2031 | May 2031 |
| US 8,152,063 | In force May 2030 | May 2030 |
| US 8,825,516 | In force Mar 2030 | Mar 2030 |
| US 8,342,393 | In force Dec 2028 | Dec 2028 |
| US 8,196,827 | In force May 2029 | May 2029 |
| US 8,286,869 | In force May 2029 | May 2029 |
8 of 11 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 |
|---|---|---|---|
| Feb 12, 2009 Reel 22252, frame 84 | Self, Matthew; Carr, J. Scott; Grant, Elliott; Ma, Kevin; Roughgarden, Jeff; Zhang, Lin | Yottamark, Inc. | Assignment of Assignor's Interest |
| May 26, 2015 Reel 35715, frame 239 | Yottamark, Inc. | Trimble Navigation Limited | Assignment of Assignor's Interest |
| Sep 21, 2023 Reel 64988, frame 807 | Trimble Navigation Limited | Trimble Inc. | Merger |
| Jun 19, 2024 Reel 67780, frame 391 | Trimble Inc. | PTX Trimble 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.
What's changing
May 2031
Term ends May 21, 2031. No further fees fall due before then
Note
The 828 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
9
later US patents cite this one
That is above the median of utility patents granted in 2013 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.