Lapsed May 28, 2025 on the fee record · Medium confidence
20-year base term ended Sep 21, 2026
Why Medium: A terminal disclaimer is on file (filed) with no resolved reference, so the term may end earlier.
Third maintenance fee unpaid; grace period ended.
Sep 21, 2006
May 28, 2025
May 28, 2013
Sep 21, 2026
Its term would have run to Sep 21, 2026: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Medium. from the record
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Sep 21, 2006, when application 11/524,985, the earliest non-provisional in its chain, was filed (this one was filed Jul 12, 2011) | Sep 21, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer on file (filed), 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 | lapsed May 28, 2025 | High confidence |
| Computed term end | The steps above, in order | May 28, 2025 | Medium confidence |
This family
| US 7,979,340 | In force no later than Oct 2027 | no later than Oct 2027 |
| US 8,452,691 | this patent May 2025 | May 2025 |
| US 10,423,997 | Term ended Sep 2026 | Sep 2026 |
Assignments
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| May 22, 2020 Reel 52735, frame 214 | Macdonald Korth, Holly C.; Peterson, Samuel Jacob | Overstock.com, Inc. | 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.
What's changing
A terminal disclaimer is on file (filed) and its reference document is not resolved. A disclaimer would cap the term earlier than May 28, 2025. We will not guess the cap.