Lapsed Sep 3, 2025 on the fee record · High confidence
20-year base term ends Aug 11, 2031
Third maintenance fee unpaid; grace period ended.
Held by Pure Storage, Inc.
Filed Dec 29, 2011 as application 13/340,119 · Granted Sep 3, 2013
Base term, 20 years from filing, plus 34 days of patent term adjustment (USPTO delay)
Today
Lapsed Sep 3, 2025
2011
2031
Clock starts
Aug 11, 2011
Aug 11, 2011
No longer in force
Sep 3, 2025
Sep 3, 2025
Granted
Sep 3, 2013
Sep 3, 2013
Term would have run to
Sep 14, 2031
Sep 14, 2031
base term
patent term adjustment
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
34
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
35
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 14, 2031: its 20-year base term plus 34 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 Aug 11, 2011, when application 13/208,094, the earliest non-provisional in its chain, was filed (this one was filed Dec 29, 2011) | Aug 11, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +34 days, USPTO patent term adjustment record | Sep 14, 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 | 2 of 3 maintenance fees paid | lapsed Sep 3, 2025 | High confidence |
| Computed term end | The steps above, in order | Sep 3, 2025 | High confidence |
This family
| US 8,788,788 | Lapsed on the fee record Jul 2022 | Jul 2022 |
| US 8,806,160 | In force Nov 2032 | Nov 2032 |
| US 8,793,467 | In force Jul 2032 | Jul 2032 |
| US 8,930,307 | In force Oct 2031 | Oct 2031 |
| US 8,589,640 | In force Jul 2032 | Jul 2032 |
| US 8,645,664 | In force Mar 2032 | Mar 2032 |
| US 8,527,544 | this patent Sep 2025 | Sep 2025 |
| Application PCT/US2012/050490 | PCT application no patent term | no patent term |
8 of 35 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 3, 2012 Reel 27470, frame 417 | Hayes, John; Miller, Ethan; Sandvig, Cary; Hasbani, Joseph S.; Wang, Feng; Colgrove, John | Pure Storage, Inc. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Note
The 34 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
895
later US patents cite this one
That is top 1% 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.