Term ended May 27, 2025 · High confidence
20-year base term ended May 27, 2025
USPTO later recorded it as expired for non-payment on Aug 17, 2026.
May 27, 2005
May 27, 2025
Jul 15, 2014
This patent's term is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. Confidence: High. from the record
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts May 27, 2005, when application 11/140,165, the earliest non-provisional in its chain, was filed (this one was filed Apr 24, 2013) | May 27, 2025 | 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 resolved from the filed document (refs US 7,613,346, US 8,103,131, US 8,452,128) | resolves to May 27, 2025, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Aug 17, 2026, after the term ended | no change | High confidence |
| Computed term end | The steps above, in order | May 27, 2025 | High confidence |
This family
| US 7,613,346 | In force Nov 2026 | Nov 2026 |
| US 8,103,131 | Term ended May 2025 | May 2025 |
| US 8,452,128 | Term ended May 2025 | May 2025 |
| US 8,781,260 | this patent May 2025 | May 2025 |
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.
A terminal disclaimer resolved from the filed document, referencing US 7,613,346, US 8,103,131, US 8,452,128, ends no earlier than this term, so it caps nothing.