Also listed on Secretary of State for Defence, The, which filed it. The recorded assignments below show how it moved.
Term ends Aug 14, 2028 · High confidence
Statutory term ended Mar 18, 2025
Held by P2I Ltd.
Filed Dec 6, 2007 · Granted Mar 5, 2013
Base term plus 1245 days of PTA
Today
2005
2028
Clock starts
Mar 18, 2005
Mar 18, 2005
Term ends
Aug 14, 2028
Aug 14, 2028
Granted
Mar 5, 2013
Mar 5, 2013
1,245
Days of term adjustment
Read from the USPTO PTA 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.
This patent's term runs 1245 days past the statutory base term on prosecution delay. All three maintenance fees are paid, so nothing but the term itself will end it. 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 18, 2005 | Mar 18, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1245 days, USPTO PTA record | Aug 14, 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 | Aug 14, 2028 | High confidence |
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 |
|---|---|---|---|
| Dec 6, 2007 Reel 20217, frame 988 | Coulson, Stephen Richard; Burnett, Ian; Sambell, John Henry | Secretary of State for Defence, The | Assignment of Assignor's Interest |
| Feb 12, 2013 Reel 29792, frame 961 | The Secretary of State for Defence | P2I Ltd. | Assignment of Assignor's Interest |
| Jul 29, 2014 Reel 33430, frame 697 | P2I Limited | Clydesdale Bank PLC | Security Interest |
| Dec 16, 2015 Reel 37304, frame 250 | Clydesdale Bank PLC | P2I Ltd. | Release of Security Interest |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
Maintenance fee events come from USPTO's own fee records. USPTO does not publish a per-patent fee page, so there is nothing to link to.
What's changing
Aug 2028
Term ends Aug 14, 2028. No further fees fall due before then
Note
The 1245 days of PTA are read from the USPTO record, not recalculated by us
Citations
This patent was granted after the end of our citation data, so we have no count for it yet. That is not the same as never having been cited.
Every date shows its work: base rule, PTA, PTE, disclaimer caps, fee overlay, 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.