Term ended Aug 29, 2020 · Low confidence
20-year base term ended Dec 7, 2019
USPTO later recorded it as expired for non-payment on May 8, 2023.
Held by Microstrategy, Incorporated
Filed Mar 6, 2012 as application 13/413,092 · Granted Mar 31, 2015
Base term plus 266 days of patent term adjustment (USPTO delay)
Today
Term ended Aug 29, 2020
1999
2026
Clock starts
Dec 7, 1999
Dec 7, 1999
Term ended
Aug 29, 2020
Aug 29, 2020
Granted
Mar 31, 2015
Mar 31, 2015
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
266
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,130,918, to Aug 29, 2020. The term already ends on or before that date, so the cap shortened nothing.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it 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 266 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Dec 7, 1999, when application 09/455,525, the earliest non-provisional in its chain, was filed (this one was filed Mar 6, 2012); a parent in its chain could not be resolved (the next row) | Dec 7, 2019 | 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 | +266 days, USPTO patent term adjustment record | Aug 29, 2020 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,130,918) | resolves to Aug 29, 2020, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 1 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on May 8, 2023, after the term ended | no change | High confidence |
| Further caveats on record | The record names parents not resolved: 09455525, 09455525 | Low confidence overall | Low confidence |
| Computed term end | The steps above, in order | Aug 29, 2020 | Low confidence |
This family
| US 8,130,918 | In force Apr 2027 | Apr 2027 |
| US 8,995,628 | this patent Aug 2020 | Aug 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 |
|---|---|---|---|
| Jan 2, 2014 Reel 31873, frame 635 | Zirngibl, Michael; Patnaik, Anurag; Maass, Bodo; Leon, Christopher S. | Microstrategy, Incorporated | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 266 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,130,918, ends no earlier than this term, so it caps nothing.
Citations
13
later US patents cite this one
That is above the median of utility patents granted in 2015 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.