Also listed on Rock Solid Images, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends May 6, 2028 · High confidence
20-year base term ended Feb 3, 2025
Held by PGS Geophysical As
Filed Jun 15, 2007 as application 10/598,023 · Granted Jan 17, 2012
Base term plus 1188 days of patent term adjustment (USPTO delay)
Today
2005
2028
Clock starts
Feb 3, 2005
Feb 3, 2005
Term ends
May 6, 2028
May 6, 2028
Granted
Jan 17, 2012
Jan 17, 2012
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
1,188
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 1188 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 3, 2005, when application PCT/GB2005/000360, the earliest non-provisional in its chain, was filed (this one was filed Jun 15, 2007) | Feb 3, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1188 days, USPTO patent term adjustment record | May 6, 2028 | 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 6, 2028 | High confidence |
This family
| US 8,099,239 | this patent May 2028 | May 2028 |
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 |
|---|---|---|---|
| Jan 18, 2007 Reel 18772, frame 972 | Macgregor, Lucy M.; Andreis, David; Tompkins, Michael | Ohm Limited | Assignment of Assignor's Interest |
| Apr 14, 2011 Reel 26124, frame 866 | Ohm Limited | Offshore Hydrocarbon Mapping PLC | Assignment of Assignor's Interest |
| Dec 8, 2011 Reel 27351, frame 197 | Offshore Hydrocarbon Mapping PLC | Rock Solid Images PLC | Change of Name |
| Jun 4, 2015 Reel 35783, frame 345 | Rock Solid Images PLC | Rock Solid Images, Inc. | Assignment of Assignor's Interest |
| Apr 8, 2020 Reel 52349, frame 588 | SLLP 206 Limited | PGS Geophysical As | Assignment of Assignor's Interest |
| Apr 8, 2020 Reel 52351, frame 174 | Rock Solid Images, Inc.; Rock Solid Images US Group, Inc. | SLLP 206 Limited | Deed of Confirmation and Clarification |
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
May 2028
Term ends May 6, 2028. No further fees fall due before then
Note
The 1188 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
33
later US patents cite this one
That is top 25% of utility patents granted in 2012 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.