Term ends Mar 7, 2031 · Medium confidence
20-year base term ends Feb 28, 2031
Why Medium: A parent in the chain could not be resolved.
Filed Sep 26, 2012 as application 13/627,930 · Granted Feb 24, 2015
Base term plus 7 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Feb 28, 2011
Feb 28, 2011
Term ends
Mar 7, 2031
Mar 7, 2031
Granted
Feb 24, 2015
Feb 24, 2015
base term
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
7
Days of term adjustment
Read from the USPTO patent term adjustment 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.
81
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 7 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. 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 Feb 28, 2011, when applications 13/037,324 and 13/037,335, the earliest non-provisional applications in its chain, were filed (this one was filed Sep 26, 2012); a parent in its chain could not be resolved (the next row) | Feb 28, 2031 | 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 | +7 days, USPTO patent term adjustment record | Mar 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 7, 2031 | Medium confidence |
This family
| Application 13/037,324 | Abandoned not computed | not computed |
| Application 13/037,335 | Abandoned not computed | not computed |
| Application PCT/US2011/026558 | PCT application no patent term | no patent term |
| US 9,329,689 | In force May 2031 | May 2031 |
| Application 13/049,857 | Abandoned not computed | not computed |
| Application 13/049,870 | Abandoned not computed | not computed |
| Application 13/049,842 | Abandoned not computed | not computed |
| Application 13/049,811 | Abandoned not computed | not computed |
8 of 81 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 23, 2013 Reel 29682, frame 320 | Haddick, John D.; Osterhout, Ralph F. | Osterhout Group, Inc. | Assignment of Assignor's Interest |
| Jan 17, 2014 Reel 32087, frame 954 | Osterhout Group, Inc. | Microsoft Corporation | Assignment of Assignor's Interest |
| Dec 9, 2014 Reel 34544, frame 541 | Microsoft Corporation | Microsoft Technology Licensing, LLC | 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
Mar 2031
Term ends Mar 7, 2031. No further fees fall due before then
Note
The 7 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1,884
later US patents cite this one
That is top 1% 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.