Lapsed Jul 6, 2018 on the fee record · From the USPTO record
20-year base term ended Oct 12, 2014
Second maintenance fee unpaid; grace period ended.
Held by IGT
Filed Apr 6, 2001 as application 09/827,870 · Granted Jul 6, 2010
Base term, 20 years from filing, plus 1821 days of patent term adjustment (USPTO delay)
Today
Lapsed Jul 6, 2018
1994
2026
Clock starts
Oct 12, 1994
Oct 12, 1994
No longer in force
Jul 6, 2018
Jul 6, 2018
Granted
Jul 6, 2010
Jul 6, 2010
Term would have run to
Oct 7, 2019
Oct 7, 2019
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
1,821
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
54
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 Oct 7, 2019: its 20-year base term plus 1821 days of term adjustment for prosecution delay. Confidence: Breadth. 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 Oct 12, 1994, when application 08/322,172, the earliest non-provisional in its chain, was filed (this one was filed Apr 6, 2001) | Oct 12, 2014 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1821 days, USPTO patent term adjustment record | Oct 7, 2019 | 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 | 1 of 2 maintenance fees paid | lapsed Jul 6, 2018 | High confidence |
| Computed term end | The steps above, in order | Jul 6, 2018 | From the USPTO record |
This family
| US 7,749,077 | this patent Jul 2018 | Jul 2018 |
| US 6,431,983 | Term ended no later than Jun 2016 | no later than Jun 2016 |
| US 7,798,899 | Term ended Jun 2016 | Jun 2016 |
| Application 60/297,490 | Pending not computed | not computed |
| US 6,832,956 | Lapsed on the fee record Dec 2016 | Dec 2016 |
| US 6,800,030 | Term ended no later than Jun 2016 | no later than Jun 2016 |
| US D488,839 | Term ended Apr 2018 | Apr 2018 |
| US 6,910,964 | Term ended no later than Oct 2014 | no later than Oct 2014 |
8 of 54 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 |
|---|---|---|---|
| May 24, 2006 Reel 17663, frame 341 | Acres Gaming Incorporated | IGT | 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 1821 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2010 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.