Term ended no later than Nov 3, 2026 · Low confidence
20-year base term ended Sep 26, 2020
Held by Snowflake Inc.
Filed Mar 24, 2004 as application 10/807,871 · Granted Feb 26, 2013
Base term plus 2229 days of patent term adjustment (USPTO delay)
Today
Ended no later than Nov 3, 2026
2000
2026
Clock starts
Sep 26, 2000
Sep 26, 2000
Ended no later than
Nov 3, 2026
Nov 3, 2026
Granted
Feb 26, 2013
Feb 26, 2013
base term
patent term adjustment
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
2,229
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
3
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 2229 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees were paid, so no fee lapse ended it. Confidence: Low. 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 26, 2000, when application 09/669,556, the earliest non-provisional in its chain, was filed (this one was filed Mar 24, 2004); a parent in its chain could not be resolved (the next row) | Sep 26, 2020 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +2229 days, USPTO patent term adjustment record | Nov 3, 2026 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | no later than Nov 3, 2026 | Low confidence |
This family
| US 8,386,450 | this patent no later than Nov 2026 | no later than Nov 2026 |
| US 7,783,625 | Term ended Nov 2020 | Nov 2020 |
2 of 3 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 |
|---|---|---|---|
| Aug 3, 2016 Reel 39331, frame 623 | Simmen, David E. | International Business Machines Corporation | Assignment of Assignor's Interest |
| Jan 12, 2017 Reel 40952, frame 270 | International Business Machines Corporation | Red Hat, Inc. | Assignment of Assignor's Interest |
| Apr 1, 2020 Reel 52280, frame 79 | Red Hat, Inc. | International Business Machines Corporation | Assignment of Assignor's Interest |
| Apr 29, 2020 Reel 52527, frame 216 | International Business Machines Corporation | Snowflake 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
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 2229 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Nov 3, 2026. We will not guess the cap.
Citations
80
later US patents cite this one
That is top 10% 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. Related patents and pending applications may cover overlapping subject matter.