Lapsed Jul 9, 2025 on the fee record · High confidence
20-year base term ends Jun 29, 2027
Third maintenance fee unpaid; grace period ended.
Filed Jun 27, 2008 as application 12/163,758 · Granted Jul 9, 2013
Base term, 20 years from filing, plus 987 days of patent term adjustment (USPTO delay)
Today
Lapsed Jul 9, 2025
2007
2030
Clock starts
Jun 29, 2007
Jun 29, 2007
No longer in force
Jul 9, 2025
Jul 9, 2025
Granted
Jul 9, 2013
Jul 9, 2013
Term would have run to
Mar 12, 2030
Mar 12, 2030
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
987
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.
12
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 Mar 12, 2030: its 20-year base term plus 987 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 Jun 29, 2007, when application 11/823,999, the earliest non-provisional in its chain, was filed (this one was filed Jun 27, 2008) | Jun 29, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +987 days, USPTO patent term adjustment record | Mar 12, 2030 | 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 Jul 9, 2025 | High confidence |
| Computed term end | The steps above, in order | Jul 9, 2025 | High confidence |
This family
| US 8,201,103 | In force Jun 2029 | Jun 2029 |
| US 8,484,578 | this patent Jul 2025 | Jul 2025 |
| US 8,762,880 | Lapsed on the fee record Jun 2026 | Jun 2026 |
| Application PCT/US2009/046344 | PCT application no patent term | no patent term |
| Application PCT/US2009/046341 | PCT application no patent term | no patent term |
| US 9,098,473 | In force Jul 2028 | Jul 2028 |
| US 9,619,116 | Lapsed on the fee record Apr 2025 | Apr 2025 |
| US 10,521,073 | In force Nov 2027 | Nov 2027 |
8 of 12 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 |
|---|---|---|---|
| Dec 29, 2008 Reel 22048, frame 475 | Dukhon, Marina; Gordner, Jonathan Ian; Satterfield, Jesse Clay; Singh, Navjot; Trevino, Maria Fernandez; Alberts, Amy E.; Guntaur, Paula | Microsoft Corporation | Assignment of Assignor's Interest |
| Dec 9, 2014 Reel 34564, frame 1 | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 987 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
142
later US patents cite this one
That is top 5% 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.