Collateral for a security interest recorded Jul 3, 2025 (Deutsche Bank AG New York Branch).
Term ends no later than Apr 13, 2028 · Low confidence
20-year base term ends Nov 10, 2026
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by IGT
Filed May 5, 2009 as application 12/435,962 · Granted Mar 3, 2015
Base term plus 520 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Nov 10, 2006
Nov 10, 2006
Ends no later than
Apr 13, 2028
Apr 13, 2028
Granted
Mar 3, 2015
Mar 3, 2015
base term
patent term adjustment
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
520
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.
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.
29
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 520 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. 2 of 3 maintenance fees are paid so far. 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 Nov 10, 2006, when applications 11/595,774 and 11/595,798, the earliest non-provisional applications in its chain, were filed (this one was filed May 5, 2009); a parent in its chain could not be resolved (the next row) | Nov 10, 2026 | 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 | +520 days, USPTO patent term adjustment record | Apr 13, 2028 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Apr 13, 2028 | Low confidence |
This family
| US 8,777,737 | In force Sep 2028 | Sep 2028 |
| US 8,784,196 | In force Sep 2028 | Sep 2028 |
| Application 11/682,253 | Abandoned not computed | not computed |
| Application PCT/US2007/007617 | PCT application no patent term | no patent term |
| Application PCT/US2007/007857 | PCT application no patent term | no patent term |
| US 9,028,329 | In force Apr 2031 | Apr 2031 |
| US 8,512,139 | In force Aug 2030 | Aug 2030 |
| Application PCT/US2007/084459 | PCT application no patent term | no patent term |
8 of 29 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 14, 2010 Reel 24388, frame 313 | Weber, Reid M.; Little, William C.; Lemay, Steven G.; Marcu, Adrian R.; Cockerille, Warner R., IV; Beaulieu, Nicole M.; Gipp, David A.; De Waal, Daniel; Manfredi, Vincent S.; Bullard, Bryan; Schneider, Richard J.; Russell, Glen Keith; Graham, Jacob; Schlottmann, Gregory A.; Williams, David C.; Larsen, Kurt M.; Yi, Jae Man; Petersen, Erik B.; Higgins, Kevin; Parrott, Gregory; Salls, David | IGT | Assignment of Assignor's Interest |
| Jun 11, 2010 Reel 24525, frame 974 | Steinbach (Legal Representative for Cara L. Iddings-Deceased), Brad Robert | IGT | Assignment of Assignor's Interest |
| Jul 3, 2025 Reel 71817, frame 394 | IGT | Deutsche Bank AG New York Branch, as Collateral Agent | Security Agreement |
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
Apr 2028
Term ends no later than Apr 13, 2028.
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 520 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 Apr 13, 2028. We will not guess the cap.
Citations
685
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
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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.