Lapsed Jul 1, 2022 on the fee record · High confidence
20-year base term ends Sep 2, 2031
Second maintenance fee unpaid; grace period ended.
Held by Compuverde AB
Filed Sep 2, 2011 as application 13/224,433 · Granted Jul 1, 2014
Base term, 20 years from filing, plus 5 days of patent term adjustment (USPTO delay)
Today
Lapsed Jul 1, 2022
2011
2031
Clock starts
Sep 2, 2011
Sep 2, 2011
No longer in force
Jul 1, 2022
Jul 1, 2022
Granted
Jul 1, 2014
Jul 1, 2014
Term would have run to
Sep 7, 2031
Sep 7, 2031
base term
after the term ends
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
5
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
3
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Sep 7, 2031: its 20-year base term plus 5 days of term adjustment for prosecution delay. 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 Sep 2, 2011, when this application, 13/224,433, was filed | Sep 2, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +5 days, USPTO patent term adjustment record | Sep 7, 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 | 1 of 3 maintenance fees paid | lapsed Jul 1, 2022 | High confidence |
| Computed term end | The steps above, in order | Jul 1, 2022 | High confidence |
This family
| US 8,769,138 | this patent Jul 2022 | Jul 2022 |
| US 10,579,615 | In force Oct 2032 | Oct 2032 |
| US 10,909,110 | Lapsed on the fee record Feb 2025 | Feb 2025 |
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 |
|---|---|---|---|
| Sep 2, 2011 Reel 26851, frame 691 | Bernbo, Stefan; Melander, Christian; Persson, Roger; Petersson, Gustav | Ilt Innovations AB | Assignment of Assignor's Interest |
| Sep 27, 2013 Reel 31313, frame 833 | Ilt Innovations AB | Compuverde AB | Change of Name |
| Aug 26, 2020 Reel 53867, frame 581 | Pure Storage, Inc. | Barclays Bank PLC as Administrative Agent | Security Interest |
| Jun 11, 2025 Reel 71558, frame 523 | Barclays Bank PLC, as Administrative Agent | Pure Storage, Inc. | Termination and Release of Security Interest in Patent Rights |
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
Note
The 5 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
10
later US patents cite this one
That is above the median of utility patents granted in 2014 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.